updated pull request template and contribution guidelines

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,15 +1,8 @@
-- [ ] Signed the CLA
+Closes #
 
-#### Issue description
+_Describe your proposed changes here._
 
-#### Relevant URLs
-
-#### What products and version are you using?
-
-
-<!--
-Is this an issue with the InfluxDB documentation (typos, missing/inaccurate information, etc.)
-or it related to a specific InfluxData project (bug report, unexpected behavior, etc.)?
-Submit product-related issues to the appropriate Github repository in the
-[InfluxData organization](https://github.com/influxdata).
--->
+- [ ] Signed the [InfluxData CLA](https://www.influxdata.com/legal/cla/)
+  ([if necessary](https://github.com/influxdata/docs-v2/blob/master/CONTRIBUTING.md#sign-the-influxdata-cla))
+- [ ] Tests pass (no build errors)
+- [ ] Rebased/mergeable

CONTRIBUTING.md

@@ -6,7 +6,7 @@ for the open-source ecosystem that protects both you and InfluxData.
 To make substantial contributions to InfluxData documentation, first sign the InfluxData CLA.
 What constitutes a "substantial" change is at the discretion of InfluxData documentation maintainers.
 
-[Sign the InfluxData (CLA)](https://www.influxdata.com/legal/cla/)
+[Sign the InfluxData CLA](https://www.influxdata.com/legal/cla/)
 
 _**Note:** Typo and broken link fixes are greatly appreciated and do not require signing the CLA._