docs: Correct *.md files using Grammarly (#70)

Author: myzeprog

CONTRIBUTING.md

@@ -8,7 +8,8 @@ Hello! Thank you for choosing to help contribute to one of the SendGrid open sou
 - [Style Guidelines & Naming Conventions](#style-guidelines-and-naming-conventions)
 - [Creating a Pull Request](#creating-a-pull-request)
 
-We use [Milestones](https://github.com/sendgrid/smtpapi-python/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions and additional PRs are welcomed and encouraged.
+<a name="roadmap"></a>
+We use [Milestones](https://github.com/sendgrid/smtpapi-python/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions, and additional PRs are welcomed and encouraged.
 
 <a name="feature-request"></a>
 ## Feature Request
@@ -30,7 +31,7 @@ A software bug is a demonstrable issue in the code base. In order for us to diag
 Before you decide to create a new issue, please try the following:
 
 1. Check the Github issues tab if the identified issue has already been reported, if so, please add a +1 to the existing post.
-2. Update to the latest version of this code and check if issue has already been fixed
+2. Update to the latest version of this code and check if the issue has already been fixed
 3. Copy and fill in the Bug Report Template we have provided below
 
 ### Please use our Bug Report Template
@@ -135,7 +136,7 @@ Please run your code through:
 
 4. Commit your changes in logical chunks. Please adhere to these [git commit
    message guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
-   or your code is unlikely be merged into the main project. Use Git's
+   or your code is unlikely to be merged into the main project. Use Git's
    [interactive rebase](https://help.github.com/articles/interactive-rebase)
    feature to tidy up your commits before making them public.
 

README.rst

@@ -96,11 +96,11 @@ Quick links:
 Local Setup of the Project
 ==========================
 
-The simplest local development workflow is by using docker.
+The simplest local development workflow is by using Docker.
 
 Steps:
 
-1. Install Docker
+1. Install [Docker](https://www.docker.com/)
 2. Run ``docker-compose build`` (this builds the container)
 3. Run ``docker-compose up`` (this runs tests by default)