Start running lychee and snippet validation again

Author: hasparus

.github/workflows/check.yml

@@ -3,7 +3,7 @@ name: Lint and check formatting
 on: pull_request
 
 jobs:
-  prettier-check:
+  check:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

.github/workflows/docs-validation.yml

@@ -6,10 +6,10 @@ name: Docs validation
 on:
   pull_request:
     branches:
-      - main
+      - source
   push:
     branches:
-      - main
+      - source
 
 jobs:
   link-check: