ci: format all YAML with `yq`

`yq` is the YAML query tool, used for manipulating YAML files. This
change uses the following command to read in and to pretty-print every
YAML file in this repository:

    for x in $(find . -name '*.yaml'); do
        yq -i -P -oy $x
    done

This makes it a bit easier to automate synchronisation between staging
and upstream, as yq always pretty-prints the entire document when
manipulating files.

Signed-off-by: Chris Kay <chris.kay@arm.com>
Change-Id: If973766fa26500d5320612422d1b4999b23439d3
diff --git a/tf-a-docs-watcher.yaml b/tf-a-docs-watcher.yaml
index b0c492b..93bacb7 100644
--- a/tf-a-docs-watcher.yaml
+++ b/tf-a-docs-watcher.yaml
@@ -3,47 +3,44 @@
     node: docker-amd64-tf-a-jammy
     project-type: freestyle
     concurrent: false
-    description:
-      Triggers whenever a code change is merged into the master branch of the
-      TF-A repository. Executes a webhook to trigger the ReadTheDocs service to
-      build a fresh copy of the documentation for one or more branches.
+    description: Triggers whenever a code change is merged into the master branch of the TF-A repository. Executes a webhook to trigger the ReadTheDocs service to build a fresh copy of the documentation for one or more branches.
     disabled: false
     builders:
-    - shell: |-
-        #!/bin/bash -e
-        echo "Trigger ReadTheDocs build on the $RTD_BRANCHES branch and the latest version"
-        RTD_API="https://readthedocs.org/api/v3/projects/trustedfirmware-a"
-        echo "Trigger build $RTD_BRANCHES branch"
-        curl -s -X POST -H "Authorization: Token ${RTD_TOKEN}" ${RTD_API}/versions/$RTD_BRANCHES/builds/ | jq .
-        echo "Trigger build latest version"
-        curl -s -X POST -H "Authorization: Token ${RTD_TOKEN}" ${RTD_API}/versions/latest/builds/ | jq .
+      - shell: |-
+          #!/bin/bash -e
+          echo "Trigger ReadTheDocs build on the $RTD_BRANCHES branch and the latest version"
+          RTD_API="https://readthedocs.org/api/v3/projects/trustedfirmware-a"
+          echo "Trigger build $RTD_BRANCHES branch"
+          curl -s -X POST -H "Authorization: Token ${RTD_TOKEN}" ${RTD_API}/versions/$RTD_BRANCHES/builds/ | jq .
+          echo "Trigger build latest version"
+          curl -s -X POST -H "Authorization: Token ${RTD_TOKEN}" ${RTD_API}/versions/latest/builds/ | jq .
     properties:
-    - build-discarder:
-        days-to-keep: 60
-        num-to-keep: 10
+      - build-discarder:
+          days-to-keep: 60
+          num-to-keep: 10
     triggers:
-    - gerrit:
-        silent: true
-        server-name: 'review.trustedfirmware.org'
-        projects:
-        - branches:
-          - branch-compare-type: PLAIN
-            branch-pattern: 'master'
-          project-compare-type: PLAIN
-          project-pattern: 'TF-A/trusted-firmware-a'
-        trigger-on:
-        - ref-updated-event
+      - gerrit:
+          silent: true
+          server-name: review.trustedfirmware.org
+          projects:
+            - branches:
+                - branch-compare-type: PLAIN
+                  branch-pattern: master
+              project-compare-type: PLAIN
+              project-pattern: TF-A/trusted-firmware-a
+          trigger-on:
+            - ref-updated-event
     wrappers:
-    - timestamps
-    - credentials-binding:
-      - text:
-          credential-id: TF-A-RTD-API-TOKEN
-          variable: RTD_TOKEN
+      - timestamps
+      - credentials-binding:
+          - text:
+              credential-id: TF-A-RTD-API-TOKEN
+              variable: RTD_TOKEN
     parameters:
-    - string:
-        name: RTD_BRANCHES
-        default: master
-        description: |
-          The branch, or branches, to rebuild the documentation for.
+      - string:
+          name: RTD_BRANCHES
+          default: master
+          description: |
+            The branch, or branches, to rebuild the documentation for.
     publishers:
-    - workspace-cleanup
+      - workspace-cleanup