Hide a few language tags in code blocks

Author: parlough

site/lib/src/extensions/code_block_processor.dart

@@ -92,6 +92,13 @@ final class CodeBlockProcessor implements PageExtension {
               content: processedContent,
               textToCopy: codeLines.copyContent,
               language: language,
+              languagesToHide: {
+                'plaintext',
+                'text',
+                'console',
+                'ps',
+                'diff',
+              },
               title: title,
               highlightLines: _parseNumbersAndRanges(rawHighlightLines),
               tag: tag != null ? CodeBlockTag.parse(tag) : null,

src/_includes/docs/test/integration/windows-example.md

@@ -1,4 +1,4 @@
-```powershell
+```ps
 PS C:\path\to\counter_app> flutter test .\integration_test\app_test.dart
 Resolving dependencies...
 Downloading packages...

src/content/deployment/android.md

@@ -139,7 +139,7 @@ If not, create one using one of the following methods:
 
    On Windows, use the following command in PowerShell:
 
-   ```powershell
+   ```ps
    keytool -genkey -v -keystore $env:USERPROFILE\upload-keystore.jks `
            -storetype JKS -keyalg RSA -keysize 2048 -validity 10000 `
            -alias upload

src/content/testing/native-debugging.md

@@ -356,11 +356,11 @@ test Flutter app. This update adds native code to debug.
       ```
    1. In Windows, run this command in the command prompt.
 
-      ```powershell
+      ```ps
       Get-ChildItem C:\dev\example\ -Rescurse | Where-Object {$_.LastWriteTime -gt (Get-Date).AddDays(-1)}
       ```
 
-      ```powershell
+      ```ps
       C:\dev\example\ios\Flutter\