KEP template: drop trailing whitespace

Author: marquiz

keps/NNNN-kep-template/README.md

@@ -133,10 +133,10 @@ Items marked with (R) are required *prior to targeting to a milestone / release*
 - [ ] (R) Design details are appropriately documented
 - [ ] (R) Test plan is in place, giving consideration to SIG Architecture and SIG Testing input (including test refactors)
   - [ ] e2e Tests for all Beta API Operations (endpoints)
-  - [ ] (R) Ensure GA e2e tests meet requirements for [Conformance Tests](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/conformance-tests.md) 
+  - [ ] (R) Ensure GA e2e tests meet requirements for [Conformance Tests](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/conformance-tests.md)
   - [ ] (R) Minimum Two Week Window for GA e2e tests to prove flake free
 - [ ] (R) Graduation criteria is in place
-  - [ ] (R) [all GA Endpoints](https://github.com/kubernetes/community/pull/1806) must be hit by [Conformance Tests](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/conformance-tests.md) 
+  - [ ] (R) [all GA Endpoints](https://github.com/kubernetes/community/pull/1806) must be hit by [Conformance Tests](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/conformance-tests.md)
 - [ ] (R) Production readiness review completed
 - [ ] (R) Production readiness review approved
 - [ ] "Implementation History" section is up-to-date for milestone
@@ -390,7 +390,7 @@ Below are some examples to consider, in addition to the aforementioned [maturity
 - All security enforcement completed
 - All monitoring requirements completed
 - All testing requirements completed
-- All known pre-release issues and gaps resolved 
+- All known pre-release issues and gaps resolved
 
 **Note:** Beta criteria must include all functional, security, monitoring, and testing requirements along with resolving all issues and gaps identified