Normalize triple-backtick language identifiers

[mikehoffms]

Rendered article sections for review:

• title > heading
  • path
  • Internal preview:
  • External preview:
  • Before/live:
  • Globally changed [triple-backtick] language identifiers for code fence blocks per https://learn.microsoft.com/en-us/contribute/content/code-in-docs#fenced-code-blocks
    • From Shell to shell.

Initial hits:
shell - 40x / 18 , incl. Shell 12x in 6
console - 16x / 4
bash - 9x / 5
powershell - 1x
sh - 0x

AB#57978860

[learn-build-service-prod]

Learn Build status updates of commit 0b27432:

✅ Validation status: passed

File	Status	Preview URL	Details
CONTRIBUTING.md	✅Succeeded
microsoft-edge/devtools-guide-chromium/quick-source/quick-source-tool.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/sample-code/sample-code.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/workspaces/workspace-tutorial.md	✅Succeeded	View
microsoft-edge/webview2/concepts/distribution.md	✅Succeeded	View
microsoft-edge/webview2/how-to/machine-setup.md	✅Succeeded	View

For more details, please refer to the build report.

[learn-build-service-prod]

Learn Build status updates of commit 275d596:

✅ Validation status: passed

File	Status	Preview URL	Details
CONTRIBUTING.md	✅Succeeded
microsoft-edge/devtools-guide-chromium/quick-source/quick-source-tool.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/sample-code/sample-code.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/workspaces/workspace-tutorial.md	✅Succeeded	View
microsoft-edge/webview2/concepts/distribution.md	✅Succeeded	View
microsoft-edge/webview2/how-to/machine-setup.md	✅Succeeded	View

For more details, please refer to the build report.