Move GitHub link back into navbar

Since the "mint" theme includes a navbar at the top of the page, this
commit moves the GitHub link (which was formerly rendered in the tab
bar) back into the navbar.

Author: jonathanhefner

docs/docs.json

@@ -8,6 +8,14 @@
     "dark": "#09090b"
   },
   "favicon": "/favicon.svg",
+  "navbar": {
+    "links": [
+      {
+        "label": "GitHub",
+        "href": "https://github.com/modelcontextprotocol"
+      }
+    ]
+  },
   "navigation": {
     "versions": [
       {
@@ -121,8 +129,7 @@
             "pages": [
               "specification/versioning",
               "development/roadmap",
-              "development/contributing",
-              "links/github"
+              "development/contributing"
             ]
           }
         ]
@@ -237,8 +244,7 @@
             "pages": [
               "specification/versioning",
               "development/roadmap",
-              "development/contributing",
-              "links/github"
+              "development/contributing"
             ]
           }
         ]
@@ -356,8 +362,7 @@
             "pages": [
               "specification/versioning",
               "development/roadmap",
-              "development/contributing",
-              "links/github"
+              "development/contributing"
             ]
           }
         ]