update docs and toolsnaps

Author: LuluBeatson

README.md

@@ -899,7 +899,7 @@ export GITHUB_MCP_TOOL_ADD_ISSUE_COMMENT_DESCRIPTION="an alternative description
 
 - **get_file_contents** - Get file or directory contents
   - `owner`: Repository owner (username or organization) (string, required)
-  - `path`: Path to file/directory (directories must end with a slash '/') (string, required)
+  - `path`: Path to file/directory. Directories, including root, must end with '/' (string, required)
   - `ref`: Accepts optional git refs such as `refs/tags/{tag}`, `refs/heads/{branch}` or `refs/pull/{pr_number}/head` (string, optional)
   - `repo`: Repository name (string, required)
   - `sha`: Accepts optional commit SHA. If specified, it will be used instead of ref (string, optional)

pkg/github/__toolsnaps__/get_file_contents.snap

@@ -11,7 +11,7 @@
         "type": "string"
       },
       "path": {
-        "description": "Path to file/directory (directories must end with a slash '/')",
+        "description": "Path to file/directory. Directories, including root, must end with '/'",
         "type": "string"
       },
       "ref": {