tweaks: swap two parts of specific regexes, for consistency with others

This order makes more sense to me: first the part that allows
almost everything, and then the special case.

syntax/lua.nanorc

@@ -54,7 +54,7 @@ color brightmagenta "\(|\)|\[|\]|\{|\}"
 color brightcyan "^#!.*"
 
 # Strings
-color red ""(\\.|[^"\])*"|'(\\.|[^'\])*'"
+color red ""([^"\]|\\.)*"|'([^'\]|\\.)*'"
 
 # Simple comments and multiline comments
 color green "--.*"