fix projects yaml input (#511)

cloud-compute/action.yml

@@ -17,14 +17,14 @@ inputs:
     description: |
       Override the head commit SHA that we are analysing instead of using the one inferred automatically by Meticulous. This normally should not be set, but is useful in some scenarios.
     required: false
-  projects_yaml:
+  projects-yaml:
     description: |
       YAML string that defines the projects to run. This must be provided if `api-token` and `app-url` are not set.
       This is useful when executing tests for multiple projects in a single job.
       If `skip` is set to `true`, Meticulous will not run tests for that project.
       Schema:
       ```yaml
-      projects_yaml: |
+      projects-yaml: |
         app:
           api-token: {{ secrets.METICULOUS_APP_API_TOKEN }}
           app-url: "http://localhost:3000"