[ci skip] Manually apply PR #3461

I would've merged it earlier, but that would cause conflicts when feature/session
is merged.
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index 972c400..be1a39e 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -404,8 +404,8 @@
 **sess_expiration**      7200 (2 hours)  Time in seconds (integer)                The number of seconds you would like the session to last.
                                                                                   If you would like a non-expiring session (until browser is closed) set the value to zero: 0
 **sess_save_path**       NULL            None                                     Specifies the storage location, depends on the driver being used.
-**sess_time_to_update**  300             Time in seconds (integer)                This options controls how often the session class will regenerate itself and create a new
-                                                                                  session ID. Setting it to 0 will disable session ID regeneartion.
+**sess_time_to_update**  300             Time in seconds (integer)                This option controls how often the session class will regenerate itself and create a new
+                                                                                  session ID. Setting it to 0 will disable session ID regeneration.
 **sess_match_ip**        FALSE           TRUE/FALSE (boolean)                     Whether to validate the user's IP address when reading the session cookie.
                                                                                   Note that some ISPs dynamically changes the IP, so if you want a non-expiring session you
                                                                                   will likely set this to FALSE.
diff --git a/user_guide_src/source/libraries/trackback.rst b/user_guide_src/source/libraries/trackback.rst
index 22859a1..da7c319 100644
--- a/user_guide_src/source/libraries/trackback.rst
+++ b/user_guide_src/source/libraries/trackback.rst
@@ -67,7 +67,7 @@
 -  **blog_name** - The name of your weblog.
 -  **charset** - The character encoding your weblog is written in. If omitted, UTF-8 will be used.
 
-.. note:: the Trackback class will automatically send only the first 500 characters of your 
+.. note:: The Trackback class will automatically send only the first 500 characters of your 
 	entry. It will also strip all HTML.
 
 The Trackback sending method returns TRUE/FALSE (boolean) on success
diff --git a/user_guide_src/source/libraries/zip.rst b/user_guide_src/source/libraries/zip.rst
index b509236..ce70e6c 100644
--- a/user_guide_src/source/libraries/zip.rst
+++ b/user_guide_src/source/libraries/zip.rst
@@ -2,9 +2,8 @@
 Zip Encoding Class
 ##################
 
-CodeIgniter's Zip Encoding Class classes permit you to create Zip
-archives. Archives can be downloaded to your desktop or saved to a
-directory.
+CodeIgniter's Zip Encoding Class permits you to create Zip archives.
+Archives can be downloaded to your desktop or saved to a directory.
 
 .. contents::
   :local: