Change step name from snake case to plain english

Signed-off-by: Michael Braverman <[email protected]>

Author: MrBr-github

.ci/matrix_job.yaml

@@ -494,7 +494,7 @@ steps:
     archiveArtifacts: 'logs/'
     credentialsId: 'blackduck_api_token'
 
-  - name: Documentation_Test
+  - name: Documentation Test
     enable: ${do_documentation_test}
     containerSelector:
       - "{name: 'documentation_test'}"