Fix Typo in tekton-golang-coverage.yaml

There was a typo in tekton-golang-coverage.yaml that was creating
wrong artifacts directory named `artifacts"` instead of `artifacts`.
This PR fixes that typo.

tekton/ci/jobs/tekton-golang-coverage.yaml

@@ -225,7 +225,7 @@ spec:
         - name: path
           value: artifacts
         - name: location
-          value: gs://$(params.uploadGcsBucket)/pr-logs/pull/$(tasks.split-full-repo-name.results.repoOwner)_$(tasks.split-full-repo-name.results.repoName)/$(params.pullRequestNumber)/$(params.jobName)/$(params.buildUUID)/artifacts"
+          value: gs://$(params.uploadGcsBucket)/pr-logs/pull/$(tasks.split-full-repo-name.results.repoOwner)_$(tasks.split-full-repo-name.results.repoName)/$(params.pullRequestNumber)/$(params.jobName)/$(params.buildUUID)/artifacts
       workspaces:
         - name: credentials
           workspace: credentials