Update lib/k8s/README.md

Co-authored-by: Copilot <[email protected]>

Author: sebawo

lib/k8s/README.md

@@ -7,7 +7,7 @@
 We were using this `K8s` framework specifically in `sdlc` cluster but after migration to `main.stage` we use it only on-demand for some legacy tests.
 
 ### Building Base Image for K8s Tests
-Is rarely required but sometimes we need infrequent updates.
+This is rarely required, but sometimes infrequent updates are needed.
 
 Go to SSO [home](https://sso.smartcontract.com/app/UserHome) and find AWS tile, use creds for `secure-sdlc` account in your terminal, then build and push the image.