Update README.md

Enhanced 3rd party code attribution
speedball2001 · Dec 15, 2020 · e15d89c · e15d89c
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Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -33,5 +33,9 @@ version.  Development releases might be available earlier in the
 
 This addon uses code from other projects:
 
-  * [sortable.js]: https://github.com/SortableJS/sortablejs
-  * [legacyprefs]: https://github.com/thundernest/addon-developer-support/tree/master/auxiliary-apis/LegacyPrefs
+  * \[sortable.js\]: https://github.com/SortableJS/sortablejs
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+  * \[legacyprefs\]: https://github.com/thundernest/addon-developer-support/tree/master/auxiliary-apis/LegacyPrefs
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+  * \[hackToolbarbutton\]: https://github.com/thundernest/addon-developer-support/tree/master/scripts/hackToolbarbutton
+