use nunjucks "square bracket syntax" for steps in docs

Signed-off-by: Brian Fletcher <brian@roadie.io>

docs/features/software-catalog/descriptor-format.md

@@ -703,7 +703,7 @@ spec:
       name: Register
       action: catalog:register
       input:
-        repoContentsUrl: '{{ steps.publish.output.repoContentsUrl }}'
+        repoContentsUrl: '{{ steps["publish"].output.repoContentsUrl }}'
         catalogInfoPath: '/catalog-info.yaml'
 ```
 

docs/features/software-templates/adding-templates.md

@@ -76,7 +76,7 @@ spec:
       name: Register
       action: catalog:register
       input:
-        repoContentsUrl: ${{ steps.publish.output.repoContentsUrl }}
+        repoContentsUrl: ${{ steps["publish"].output.repoContentsUrl }}
         catalogInfoPath: '/catalog-info.yaml'
 ```
 

docs/features/software-templates/migrating-from-v1beta2-to-v1beta3.md

@@ -169,14 +169,14 @@ These should be moved to `links` under the `output` object instead.
 
 ```diff
   output:
--   remoteUrl: '{{ steps.publish.output.remoteUrl }}'
--   entityRef: '{{ steps.register.output.entityRef }}'
+-   remoteUrl: '{{ steps["publish"].output.remoteUrl }}'
+-   entityRef: '{{ steps["register"].output.entityRef }}'
 +   links:
 +     - title: Repository
-+       url: ${{ steps.publish.output.remoteUrl }}
++       url: ${{ steps["publish"].output.remoteUrl }}
 +     - title: Open in catalog
 +       icon: catalog
-+       entityRef: ${{ steps.register.output.entityRef }}
++       entityRef: ${{ steps["register"].output.entityRef }}
 
 ```
 
@@ -206,7 +206,7 @@ Alternatively, it's possible to keep the `dash-case` syntax and use brackets for
 
 ```yaml
 input:
-  repoUrl: ${{ steps['my-custom-action'].output.repoUrl }}
+  repoUrl: ${{ steps["my-custom-action"].output.repoUrl }}
 ```
 
 ### Summary

docs/features/software-templates/writing-templates.md

@@ -88,17 +88,17 @@ spec:
       name: Register
       action: catalog:register
       input:
-        repoContentsUrl: ${{ steps.publish.output.repoContentsUrl }}
+        repoContentsUrl: ${{ steps["publish"].output.repoContentsUrl }}
         catalogInfoPath: '/catalog-info.yaml'
 
   # some outputs which are saved along with the job for use in the frontend
   output:
     links:
       - title: Repository
-        url: ${{ steps.publish.output.remoteUrl }}
+        url: ${{ steps["publish"].output.remoteUrl }}
       - title: Open in catalog
         icon: catalog
-        entityRef: ${{ steps.register.output.entityRef }}
+        entityRef: ${{ steps["register"].output.entityRef }}
 ```
 
 Let's dive in and pick apart what each of these sections do and what they are.
@@ -505,10 +505,10 @@ The main two that are used are the following:
 output:
   links:
     - title: Repository
-      url: ${{ steps.publish.output.remoteUrl }} # link to the remote repository
+      url: ${{ steps["publish"].output.remoteUrl }} # link to the remote repository
     - title: Open in catalog
       icon: catalog
-      entityRef: ${{ steps.register.output.entityRef }} # link to the entity that has been ingested to the catalog
+      entityRef: ${{ steps["register"].output.entityRef }} # link to the entity that has been ingested to the catalog
 ```
 
 ## The templating syntax