fix: add alt-text for blog post images

Author: mcanouil

docs/blog/posts/2025-10-10-quarto-wizard-1-0-0/index.qmd

@@ -42,15 +42,23 @@ include-in-header:
       </style>
 quarto-wizard: '[]{.quarto-wizard title="Quarto Wizard Logo" aria-label="Quarto Wizard Logo"}'
 alt-text:
-  featured: "Cartoon dog wizard wearing dark blue hat with red band holding magic wand creating HTML and CSS code scrolls in starry night scene."
-  extensions-marketplace: "alt-text"
-  quarto-extensions-home: "alt-text"
-  quarto-extensions-modal: "alt-text"
-  quarto-extensions-template: "alt-text"
-  vscode-activity-bar: "alt-text"
-  vscode-install: "alt-text"
-  vscode-update: "alt-text"
-  vscode-template: "alt-text"
+  featured: "Cartoon dog wizard wearing blue hat with red band holding magic wand creating HTML and CSS code scrolls in starry night scene."
+  extensions-marketplace: |
+    Visual Studio Code Extensions Marketplace showing Quarto Wizard search results with install button.
+  quarto-extensions-home: |
+    Quarto Extensions website displaying grid of extension cards including webr, Reveal.js Clean theme, and Hikmah Academic templates.
+  quarto-extensions-modal: |
+    Quarto Extensions website with Install Options popup showing manual terminal command and Quarto Wizard installation options for Visual Studio Code, Positron, and VSCodium.
+  quarto-extensions-template: |
+    Quarto Extensions website in list view showing Template extensions with install and use buttons.
+  vscode-activity-bar: |
+    Quarto Wizard Extensions Installed panel in Visual Studio Code showing no extensions installed message with green Install Extensions button.
+  vscode-install: |
+    Quarto Wizard extension selection dialog showing list of available extensions with checkboxes including LIVE, HIGHLIGHT TEXT, GITHUB, and other Quarto extensions.
+  vscode-update: |
+    Quarto Wizard Extensions Installed panel showing expanded iconify extension details with update button and version information.
+  vscode-template: |
+    Visual Studio Code showing Quarto Wizard with installed extensions list and document editor displaying invoice template with YAML frontmatter.
 editor:
   render-on-save: true
 ---