Update README.md

Author: davegaeddert

README.md

@@ -38,7 +38,15 @@ When codeplus runs, you'll get something like this:
 
 ### Tab display name
 
-You can also change the display name by using parentheses after the filename (or by starting with parenetheses):
+Instead of filenames, you can also use a "display name" in parenetheses:
+
+```yaml
+# (GitHub)
+version: 3
+groups: ...
+```
+
+Or you can include a filename *and* a display name:
 
 ```yaml
 # .pullapprove.yml (GitHub)