Update runtime files
diff --git a/runtime/doc/pattern.txt b/runtime/doc/pattern.txt
index 9628827..c52708e 100644
--- a/runtime/doc/pattern.txt
+++ b/runtime/doc/pattern.txt
@@ -1,4 +1,4 @@
-*pattern.txt*   For Vim version 8.2.  Last change: 2021 May 02
+*pattern.txt*   For Vim version 8.2.  Last change: 2021 Jul 16
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -936,7 +936,7 @@
 	can be any line number.  The first line is 1.
 	WARNING: When inserting or deleting lines Vim does not automatically
 	update the matches.  This means Syntax highlighting quickly becomes
-	wrong.  Also when refering to the cursor position (".") and
+	wrong.  Also when referring to the cursor position (".") and
 	the cursor moves the display isn't updated for this change.  An update
 	is done when using the |CTRL-L| command (the whole screen is updated).
 	Example, to highlight the line where the cursor currently is: >
@@ -959,7 +959,7 @@
 	for multibyte characters).
 	WARNING: When inserting or deleting text Vim does not automatically
 	update the matches.  This means Syntax highlighting quickly becomes
-	wrong.  Also when refering to the cursor position (".") and
+	wrong.  Also when referring to the cursor position (".") and
 	the cursor moves the display isn't updated for this change.  An update
 	is done when using the |CTRL-L| command (the whole screen is updated).
 
@@ -989,7 +989,7 @@
 	one screen character.
 	WARNING: When inserting or deleting text Vim does not automatically
 	update highlighted matches.  This means Syntax highlighting quickly
-	becomes wrong.  Also when refering to the cursor position (".") and
+	becomes wrong.  Also when referring to the cursor position (".") and
 	the cursor moves the display isn't updated for this change.  An update
 	is done when using the |CTRL-L| command (the whole screen is updated).
 	Example, to highlight all the characters after virtual column 72: >
@@ -1472,7 +1472,8 @@
     - The number of characters (distance) between two consecutive matching
       characters.
     - Matches at the beginning of a word
-    - Matches after a camel case character or a path separator or a hyphen.
+    - Matches at a camel case character (e.g. Case in CamelCase)
+    - Matches after a path separator or a hyphen.
     - The number of unmatched characters in a string.
 The matching string with the highest score is returned first.