Update CONTRIBUTING.md

Author: zoubeiri

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 ## Submitting Changes
 
-- Write your code. Include tests if appropriate.
-- Fill out the [Individual](/Palantir Individual Contributor License Agreement.pdf?raw=true) or [Corporate](/Palantir Corporate Contributor License Agreement.pdf?raw=true) Contributor License Agreement and send it to [opensource@palantir.com](mailto:opensource@palantir.com).
+1. Write your code. Include tests if appropriate.
+2. Fill out the [Individual](/Palantir Individual Contributor License Agreement.pdf?raw=true) or [Corporate](/Palantir Corporate Contributor License Agreement.pdf?raw=true) Contributor License Agreement and send it to [opensource@palantir.com](mailto:opensource@palantir.com).
   - You can do this easily on a Mac by using the Tools - Annotate - Signature feature in Preview.app.
-- Submit a PR against master.
+3. Submit a PR against master.