Merge pull request #22187 from fengyuentau:ci_job_rename_5.x

Rename jobs for better understanding for branch 5.x

* rename jobs

* remove dots from job names

* correct ubuntu version for linux arm64

.github/workflows/PR-5.x.yaml

@@ -6,23 +6,23 @@ on:
       - 5.x
 
 jobs:
-  ARM64:
+  Ubuntu1804-ARM64:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-ARM64.yaml@main
 
-  U20:
+  Ubuntu2004-x64:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-U20.yaml@main
 
-  W10:
+  Windows10-x64:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-W10.yaml@main
 
   macOS-ARM64:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-macOS-ARM64.yaml@main
 
-  macOS-X64:
+  macOS-x64:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-macOS-x86_64.yaml@main
 
   iOS:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-iOS.yaml@main
 
   TIM-VX:
-    uses: opencv/ci-gha-workflow/.github/workflows/OCV-timvx-backend-tests-4.x.yml@main
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-timvx-backend-tests-4.x.yml@main