Add quotes to verify CUDA Toolkit install

[mhmoore12]

Missing quotes causes dir check to fail.

[opbld31]

Docs Build status updates of commit 8d6b3a7:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
articles/Unary-Operations.md	⚠️Warning	View	Details
articles/Setup-Windows-Python.md	⚠️Warning	View	Details
articles/CNTK-Library-Native-Eval-Interface.md	⚠️Warning	View	Details
articles/AAAI-2018-Tutorial.md	⚠️Warning	View	Details
articles/CNTK-CSharp-Examples.md	⚠️Warning	View	Details
articles/Tutorial2/Tutorial2.md	⚠️Warning	View	Details
articles/Tutorial/Tutorial.md	⚠️Warning	View	Details
articles/Loading-Data-Overview.md	⚠️Warning	View	Details
articles/Setup-Windows-Binary-Manual.md	⚠️Warning	View	Details
articles/Setup-Linux-Binary-Manual.md	⚠️Warning	View	Details
articles/404.md	⚠️Warning	View	Details
articles/Archive/CNTK-Shared-Libraries-Naming-Format.md	⚠️Warning	View	Details
articles/How-do-I-Train-models-in-Python.md	⚠️Warning	View	Details
articles/Interpreting-epoch_size-and-minibatch_size_in_samples-and-MinibatchSource.next_minibatch-in-CNTK.md	⚠️Warning	View	Details
articles/Setup-Linux-Python.md	⚠️Warning	View	Details
articles/Setup-GPU-Specific-Packages.md	💡Suggestion	View	Details

articles/Unary-Operations.md

• [Warning] Missing attribute: author. Add the current author's GitHub ID.
• [Warning] Missing attribute: title.

articles/Setup-Windows-Python.md

• [Warning] Duplicate tab id: (cntkpy26, 2).
• Line 55: [Warning] Invalid link: '<a href="#installfrompypi">PyPI</a>'. The file Setup-Windows-Python.md doesn't contain a bookmark named 'installfrompypi'.

articles/CNTK-Library-Native-Eval-Interface.md

• [Warning] Invalid value for ms.topic: 'get-started-article'.

articles/AAAI-2018-Tutorial.md

• [Warning] Invalid value for ms.author: 'yuqtang' is not a valid Microsoft alias.
• Line 63: [Suggestion] Link 'http://notebooks.azure.com/cntk/libraries/tutorials' is insecure. Links to Microsoft sites must use 'https' instead of 'http'. NOTE: This Suggestion will become a Warning on 12/20/2019.

articles/CNTK-CSharp-Examples.md

• [Warning] Invalid value for ms.author: 'liqun' is not a valid Microsoft alias.

articles/Tutorial2/Tutorial2.md

• [Warning] Invalid value for ms.service: 'Cognitive-services'.

articles/Tutorial/Tutorial.md

• [Warning] Invalid value for ms.service: 'Cognitive-services'.

articles/Loading-Data-Overview.md

• [Warning] Missing attribute: author. Add the current author's GitHub ID.

articles/Setup-Windows-Binary-Manual.md

• [Warning] Missing attribute: either ms.prod or ms.service is required. Use ms.prod for on-premise products, or ms.service for cloud services.

articles/Setup-Linux-Binary-Manual.md

• [Warning] Missing attribute: either ms.prod or ms.service is required. Use ms.prod for on-premise products, or ms.service for cloud services.

articles/404.md

• [Warning] Missing attribute: author. Add the current author's GitHub ID.
• [Warning] Missing attribute: ms.author. Add the current author's Microsoft alias.
• [Warning] Missing attribute: either ms.prod or ms.service is required. Use ms.prod for on-premise products, or ms.service for cloud services.
• [Warning] Missing attribute: title.
• [Warning] Missing attribute: ms.topic. Add a valid value to indicate the article type.
• [Warning] Missing attribute: ms.date. A freshness date is required for this content set. Add a date in format MM/DD/YYYY.
• Line 5: [Suggestion] Link 'https://docs.microsoft.com/en-us/cognitive-toolkit/index' contains locale code 'en-us'. For localizability, remove 'en-us' from links to most Microsoft sites. NOTE: This Suggestion will become a Warning on 12/20/2019.

articles/Archive/CNTK-Shared-Libraries-Naming-Format.md

• [Warning] Invalid value for ms.topic: 'get-started-article'.

articles/How-do-I-Train-models-in-Python.md

• Line 15: [Warning] Invalid link: '<a href="#relate-alpha-beta1-beta2-and-epsilon-to-learning-rate-and-momentum-in-adamsgd">Relate alpha, beta1, beta2 and epsilon to learning rate and momentum in adam_sgd</a>'. The file How-do-I-Train-models-in-Python.md doesn't contain a bookmark named 'relate-alpha-beta1-beta2-and-epsilon-to-learning-rate-and-momentum-in-adamsgd'.

articles/Interpreting-epoch_size-and-minibatch_size_in_samples-and-MinibatchSource.next_minibatch-in-CNTK.md

• Line 14: [Warning] Invalid link: '<a href="#epochsize">epoch_size</a>'. The file Interpreting-epoch_size-and-minibatch_size_in_samples-and-MinibatchSource.next_minibatch-in-CNTK.md doesn't contain a bookmark named 'epochsize'.
• Line 15: [Warning] Invalid link: '<a href="#minibatchsizeinsamples">minibatch_size_in_samples</a>'. The file Interpreting-epoch_size-and-minibatch_size_in_samples-and-MinibatchSource.next_minibatch-in-CNTK.md doesn't contain a bookmark named 'minibatchsizeinsamples'.
• Line 16: [Warning] Invalid link: '<a href="#minibatchSourcenextminibatch">MinibatchSource.next_minibatch</a>'. The file Interpreting-epoch_size-and-minibatch_size_in_samples-and-MinibatchSource.next_minibatch-in-CNTK.md doesn't contain a bookmark named 'minibatchSourcenextminibatch'.

articles/Setup-Linux-Python.md

• Line 68: [Warning] Invalid link: '<a href="#installfrompypi">PyPI</a>'. The file Setup-Linux-Python.md doesn't contain a bookmark named 'installfrompypi'.
• Line 222: [Warning] Invalid link: '<a href="#prerequisites">prerequisites above</a>'. The file Setup-Linux-Python.md doesn't contain a bookmark named 'prerequisites'.
• Line 284: [Warning] Invalid link: '<a href="#prerequisites">prerequisites above</a>'. The file Setup-Linux-Python.md doesn't contain a bookmark named 'prerequisites'.

articles/Setup-GPU-Specific-Packages.md

• Line 32: [Suggestion] Multiple H1s are not allowed. You can only have one top-level heading. NOTE: This Suggestion will become a Warning on 01/06/2020.
• Line 48: [Suggestion] Multiple H1s are not allowed. You can only have one top-level heading. NOTE: This Suggestion will become a Warning on 01/06/2020.
• Line 56: [Suggestion] Multiple H1s are not allowed. You can only have one top-level heading. NOTE: This Suggestion will become a Warning on 01/06/2020.

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