Rename ci-pipeline.mmd to ci-pipeline.md

Author: leofang

ci/ci-pipeline.mmd ci/ci-pipeline.mdci/ci-pipeline.mmd renamed to ci/ci-pipeline.md

@@ -73,4 +73,4 @@ flowchart TD
     class ARTIFACTS,GITHUB_ARTIFACTS,GITHUB_CACHE,GA1,GC1 artifactStyle
     class TEST,TEST_PLATFORMS,TS1,TS2,TS3,TEST_DETAILS,ARTIFACT_FLOWS testStyle
     class RELEASE,RELEASE_STAGES,R1,R2,R3,RELEASE_DETAILS releaseStyle
-```
+```