Update check_pr.yaml (#548)

Author: blckmn

.github/workflows/check_pr.yaml

@@ -31,7 +31,7 @@ jobs:
     - name: Build package
       id: build-package
       continue-on-error: true
-      run: npm run Build
+      run: npm run build
 
   check-file-names:
     runs-on: ubuntu-latest
@@ -71,4 +71,4 @@ jobs:
 
     - name: Check title case in markdown files
       id: check-title-case
-      run: npm run check:title-case
+      run: npm run check:title-case