Rename 'macOS-11.0' to 'macOS-11' everywhere (#3417)

* rename 'macos11.0' to 'macos-11'

* fix nitpicks

* resolve conflicts

images.CI/macos/azure-pipelines/macos11.yml

@@ -1,23 +1,23 @@
-name: macOS-11.0_$(date:yyyyMMdd)$(rev:.r)_unstable
-schedules:
-- cron: "0 0 * * *"
-  displayName: Daily
-  branches:
-    include:
-    - main
-  always: true
-
-trigger: none
-pr:
-  autoCancel: true
-  branches:
-    include:
-    - main
-
-jobs:
-- template: image-generation.yml
-  parameters:
-    image_label: 'macOS Big Sur'
-    base_image_name: 'clean-macOS-11.0-380Gb-runner'
-    template_path: 'templates/macOS-11.0.json'
-    target_datastore: 'ds-image'
+name: macOS-11_$(date:yyyyMMdd)$(rev:.r)_unstable
+schedules:
+- cron: "0 0 * * *"
+  displayName: Daily
+  branches:
+    include:
+    - main
+  always: true
+
+trigger: none
+pr:
+  autoCancel: true
+  branches:
+    include:
+    - main
+
+jobs:
+- template: image-generation.yml
+  parameters:
+    image_label: 'macOS Big Sur'
+    base_image_name: 'clean-macOS-11-380Gb-runner'
+    template_path: 'templates/macOS-11.json'
+    target_datastore: 'ds-image'