Update workflows

- Fix typo in build-web.yml comment
- Fix name in delete-web-preview.yml

.github/workflows/build-web.yml

@@ -6,7 +6,7 @@ on:
   pull_request:
 
 # If another web build starts for the same branch, cancel the previous build. This
-# protects us from two build trying to upload at the same time and clobbering each
+# protects us from two builds trying to upload at the same time and clobbering each
 # other.
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/delete-web-preview.yml

@@ -1,4 +1,4 @@
-name: Build Website
+name: Delete Preview Build
 
 on:
   pull_request: