Update runtime files.

runtime/doc/change.txt

@@ -1,4 +1,4 @@
-*change.txt*    For Vim version 8.2.  Last change: 2019 Sep 28
+*change.txt*    For Vim version 8.2.  Last change: 2020 Feb 09
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -636,6 +636,8 @@ For other systems the tmpnam() library function is used.
 			|cmdline-ranges|.
 
 			See |:s_flags| for [flags].
+			The delimiter doesn't need to be /, see
+			|pattern-delimiter|.
 
 :[range]s[ubstitute] [flags] [count]
 :[range]&[&][flags] [count]					*:&*
@@ -775,7 +777,7 @@ This deletes "TESTING" from all lines, but only one per line.
 For compatibility with Vi these two exceptions are allowed:
 "\/{string}/" and "\?{string}?" do the same as "//{string}/r".
 "\&{string}&" does the same as "//{string}/".
-							*E146*
+						*pattern-delimiter* *E146*
 Instead of the '/' which surrounds the pattern and replacement string, you
 can use any other single-byte character, but not an alphanumeric character,
 '\', '"' or '|'.  This is useful if you want to include a '/' in the search