Update pull request template

Author: prachirp

.github/PULL_REQUEST_TEMPLATE.md

@@ -12,9 +12,9 @@ reading the git commit log).
 If you are updating the documentation, please do it in separate PRs from
 code changes. And use the following structure for your documentation PR:
 * The first commit in the PR should include the changes to the markdown files and the name of the commit should start with `docs:`.
-* The second commit should be the generated content from running `make gendocs`. The commit message should be `regenerate docs`.
+* The second commit should be the generated content from running `make docs`. The commit message should be `regenerate docs`.
 
 **PLEASE REMOVE THIS COMMENT BLOCK BEFORE SUBMITTING THE PR** (the bits
 between the arrows)
 
--->
+-->