chore: updating scaffolder v2 template

Signed-off-by: blam <ben@blam.sh>

plugins/scaffolder-backend/sample-templates/v1beta2-demo/template.yaml

@@ -36,7 +36,7 @@ spec:
     - id: fetch-base
       name: Fetch Base
       action: fetch:cookiecutter
-      parameters:
+      input:
         url: ./template
         values:
           name: '{{ parameters.name }}'
@@ -44,14 +44,14 @@ spec:
     - id: fetch-docs
       name: Fetch Docs
       action: fetch:plain
-      parameters:
+      input:
         targetPath: ./community
         url: https://github.com/backstage/community/tree/main/backstage-community-sessions
 
     - id: publish
       name: Publish
       action: publish:github
-      parameters:
+      input:
         allowedHosts: ['github.com']
         description: 'This is {{ parameters.name }}'
         repoUrl: '{{ parameters.repoUrl }}'
@@ -59,7 +59,7 @@ spec:
     - id: register
       name: Register
       action: catalog:register
-      parameters:
+      input:
         repoContentsUrl: '{{ steps.publish.output.repoContentsUrl }}'
         catalogInfoPath: '/catalog-info.yaml'