[ci skip] Add 'Using the X class' headings to Session & Language lib docs
Fixes 2 doc compile warnings
diff --git a/user_guide_src/source/libraries/language.rst b/user_guide_src/source/libraries/language.rst
index 3cee5d7..10449b9 100644
--- a/user_guide_src/source/libraries/language.rst
+++ b/user_guide_src/source/libraries/language.rst
@@ -26,6 +26,10 @@
<div class="custom-index container"></div>
+************************
+Using the Language Class
+************************
+
Creating Language Files
=======================
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index 3e6dcf2..c4f8616 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -16,6 +16,10 @@
<div class="custom-index container"></div>
+***********************
+Using the Session Class
+***********************
+
Initializing a Session
======================