Update description (#1319)

Author: JoannaaKL

README.md

@@ -676,7 +676,7 @@ Options are:
   - `state`: New state (string, optional)
   - `state_reason`: Reason for the state change. Ignored unless state is changed. (string, optional)
   - `title`: Issue title (string, optional)
-  - `type`: Type of this issue (string, optional)
+  - `type`: Type of this issue. Only use if the repository has issue types configured. Use list_issue_types tool to get valid type values for the organization. If the repository doesn't support issue types, omit this parameter. (string, optional)
 
 - **list_issue_types** - List available issue types
   - `owner`: The organization owner of the repository (string, required)

pkg/github/__toolsnaps__/issue_write.snap

@@ -74,7 +74,7 @@
         "type": "string"
       },
       "type": {
-        "description": "Type of this issue",
+        "description": "Type of this issue. Only use if the repository has issue types configured. Use list_issue_types tool to get valid type values for the organization. If the repository doesn't support issue types, omit this parameter.",
         "type": "string"
       }
     },

pkg/github/issues.go

@@ -881,7 +881,7 @@ Options are:
 				mcp.Description("Milestone number"),
 			),
 			mcp.WithString("type",
-				mcp.Description("Type of this issue"),
+				mcp.Description("Type of this issue. Only use if the repository has issue types configured. Use list_issue_types tool to get valid type values for the organization. If the repository doesn't support issue types, omit this parameter."),
 			),
 			mcp.WithString("state",
 				mcp.Description("New state"),