Fixing various Sphinx bugs and syntax errors in docs
diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst
index f99eb91..c5fa680 100644
--- a/user_guide_src/source/libraries/email.rst
+++ b/user_guide_src/source/libraries/email.rst
@@ -183,7 +183,7 @@
 extract the message from your HTML email and strip the tags.
 
 $this->email->set_header()
------------------------
+--------------------------
 
 Appends additional headers to the e-mail::