minor: Rewrap docs for uncompiled readability.

docs/highlighters.md

@@ -67,8 +67,8 @@ To create your own `myhighlighter` highlighter:
   This function does the actual syntax highlighting, by calling
   `_zsh_highlight_add_highlight` with the start and end of the region to
   be highlighted and the `ZSH_HIGHLIGHT_STYLES` key to use. Define the default
-  style for that key in the highlighter script outside of any function with `:
-  ${ZSH_HIGHLIGHT_STYLES[key]:=value}`. For example:
+  style for that key in the highlighter script outside of any function with
+  `: ${ZSH_HIGHLIGHT_STYLES[key]:=value}`
. For example:
 
         : ${ZSH_HIGHLIGHT_STYLES[aurora]:=fg=green}