reorganize our toc to look nicer and make more sense (#3632)

diff --git a/docs/index.rst b/docs/index.rst
index 82099dc..9a881ca 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -58,16 +58,14 @@
 
     fernet
     x509/index
-    random-numbers
-    exceptions
-    faq
-    glossary
 
 .. toctree::
     :maxdepth: 2
     :caption: The hazardous materials layer
 
     hazmat/primitives/index
+    exceptions
+    random-numbers
     hazmat/backends/index
     hazmat/bindings/index
 
@@ -76,13 +74,15 @@
     :caption: The cryptography open source project
 
     installation
+    changelog
+    faq
     development/index
     security
     limitations
     api-stability
     doing-a-release
-    changelog
     community
+    glossary
 
 
 .. note::