Fix GitHub link to HolmesGPT repo, fix Other Features sidebar flattening

- Change repo_url and social link in conf.py to holmesGPT repo
- Change Other Features toctree maxdepth from 4 to 1 so sub-pages
  nest under their parent (e.g. PagerDuty under Send Alerts to Robusta)
  instead of all appearing as flat top-level items

https://claude.ai/code/session_0184fwhrjC4ELrYQBMCbyhfS

Author: claude

docs/conf.py

@@ -293,8 +293,8 @@
     "icon": {
         "repo": "fontawesome/brands/github",
     },
-    "repo_url": "https://github.com/robusta-dev/robusta",
-    "repo_name": "Robusta",
+    "repo_url": "https://github.com/robusta-dev/holmesGPT",
+    "repo_name": "HolmesGPT",
     "repo_type": "github",
     "edit_uri": "tree/master/docs",
     "palette": [
@@ -330,7 +330,7 @@
     "social": [
         {
             "icon": "fontawesome/brands/github",
-            "link": "https://github.com/robusta-dev/robusta",
+            "link": "https://github.com/robusta-dev/holmesGPT",
         },
         {
             "icon": "fontawesome/brands/slack",

docs/index.rst

@@ -42,7 +42,7 @@
    configuration/exporting/prometheus-query-api
 
 .. toctree::
-   :maxdepth: 4
+   :maxdepth: 1
    :caption: Other Features
    :hidden: