test: sync mermaid schema fixture with updated descriptions

Author: stevenobiajulu

__tests__/tools/mermaid.json

@@ -1,6 +1,6 @@
 {
   "name": "generate_mermaid_diagram",
-  "description": "Generate mermaid diagram and chart with mermaid syntax dynamically. Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. The main purpose of Mermaid is to help documentation catch up with development.",
+  "description": "Generate mermaid diagram and chart with mermaid syntax dynamically. Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. Syntax tips: quote labels containing special characters, e.g. B[\"Label text\"], and use <br/> for line breaks.",
   "inputSchema": {
     "type": "object",
     "properties": {
@@ -23,7 +23,7 @@
       "outputType": {
         "type": "string",
         "enum": ["base64", "svg", "mermaid", "file", "svg_url", "png_url"],
-        "description": "The output type of the diagram. Can be 'base64', 'svg', 'mermaid', 'file', 'svg_url', or 'png_url'. Default is 'base64'. 'base64' returns PNG image as base64 encoded string. 'file' saves the PNG image to disk. The *_url options return public mermaid.ink links for remote-friendly sharing.",
+        "description": "The output type of the diagram. Default is 'base64'. Recommended: 'file' (saves PNG to disk for easy viewing). 'base64' returns PNG as a base64 encoded string. 'svg' returns SVG markup. 'mermaid' returns the raw Mermaid syntax. 'svg_url' and 'png_url' return public mermaid.ink links for sharing.",
         "default": "base64"
       }
     },