update pandoc repo

Author: johanneswilm

.github/workflows/build.yml

@@ -41,8 +41,8 @@ jobs:
       - name: checkout
         uses: actions/checkout@v4
         with:
-          repository: haskell-wasm/pandoc
-          ref: wasm
+          repository: johanneswilm/pandoc
+          ref: main
           path: pandoc
 
       - name: gen-plan-json