Update help text, closes #713

assets/manual/bat.1.in

@@ -93,8 +93,9 @@ the pager completely, use the '\-\-paging' option. Example: '\-\-pager "less
 .HP
 \fB\-m\fR, \fB\-\-map\-syntax\fR <from:to>...
 .IP
-Map a file extension or file name to an existing syntax. For example, to
-highlight *.conf files with the INI syntax, use '\-m conf:ini'. To
+Map a file extension or file name to an existing syntax (specified by a
+file extension or file name). For example, to
+highlight *.build files with the Python syntax, use '\-m build:py'. To
 highlight files named '.myignore' with the Git Ignore syntax, use '\-m
 \&.myignore:gitignore'.
 .HP