Fixed typo in welcome-pr.yml & improved stale.yml config

Author: Chanchal-D

.github/workflows/stale.yml

@@ -26,3 +26,5 @@ jobs:
         stale-pr-message: 'This PR has not seen any action for a while! Closing for now, but it can be reopened at a later date.'
         stale-issue-label: 'no-issue-activity'
         stale-pr-label: 'no-pr-activity'
+        days-before-stale: 30 # Added parameter to control inactivity period
+        days-before-close: 7  # Optional: Time after marking stale before closing

.github/workflows/welcome-pr.yml

@@ -1,4 +1,4 @@
-name:  Welcome to the Microsoft Generative AI
+name: Welcome to the Microsoft Generative AI
 on:
   # Trigger the workflow on pull request
   pull_request_target:
@@ -7,7 +7,7 @@ permissions:
   contents: read
   pull-requests: write
 jobs:
-  asses-pull-request:
+  assess-pull-request:
     runs-on: ubuntu-latest
     steps:
       - name: Add Label and thanks comment to Pull request
@@ -30,5 +30,5 @@ jobs:
       - name: Auto-assign issue
         uses: pozil/auto-assign-issue@v1
         with:
-          repo-token:  ${{ secrets.GITHUB_TOKEN }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
           assignees: koreyspace