[Docs] Fix broken mobile responsiveness CSS selector and parameter naming in 'extension-guide' shortcode

Current State

While inspecting the Hugo shortcode templates for Meshery documentation, two issues were identified in docs/layouts/shortcodes/extension-guide.html:

1. Broken Responsive Mobile CSS Layout: Under @media (max-width: 767px) in extension-guide.html:47, there is a CSS selector class typo .extenion-guide-card (missing the 's' in extension). Because of this typo, the responsive mobile card layout styles (max-width: 30rem; flex-direction: column;) fail to apply on mobile screen sizes (< 767px).

   css复制

   /* docs/layouts/shortcodes/extension-guide.html:47 */
   @media (max-width: 767px) {
     /* Typo: .extenion-guide-card should be .extension-guide-card */
     .extenion-guide-card {
       max-width: 30rem;
       flex-direction: column;
     }
   }

2. Parameter Naming Typo (guide_assests_folder): Line 59 reads {{ $guideAssetsFolder := .Get "guide_assests_folder" }} containing a spelling typo (assests instead of assets).

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Desired State

1. Fix the CSS selector in docs/layouts/shortcodes/extension-guide.html from .extenion-guide-card to .extension-guide-card so mobile screen responsiveness works as expected.
2. Update extension-guide.html to support guide_assets_folder while maintaining backward compatibility for guide_assests_folder:
   hugo复制

   {{ $guideAssetsFolder := or (.Get "guide_assets_folder") (.Get "guide_assests_folder") }}

3. Update parameter usage across callers:
   • docs/content/en/guides/configuration-management/edges-guide.md
   • docs/content/en/guides/configuration-management/identifying-components/index.md
   • docs/content/en/project/contributing/contributing-docs/shortcode-examples.md

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