Update docs/krel/README.md

Removed Extra space

Co-authored-by: Nabarun Pal <[email protected]>

Author: whyrass

docs/krel/README.md

@@ -22,7 +22,7 @@ Either Compile krel by running the `compile-release-tools` script from the root
 ```
 Or
 
-Run the following command in the terminal :
+Run the following command in the terminal:
 
 ```
 go install k8s.io/release/cmd/krel@latest