Update similarIssues.yml to include issue bodies (microsoft#16915)

Improved the GitGudSimilarIssues bot to include issue body info now.

Author: craigloewen-msft

.github/workflows/similarIssues.yml

@@ -13,7 +13,8 @@ jobs:
       - id: getBody
         uses: craigloewen-msft/GitGudSimilarIssues@main
         with:
-          issuetitle: ${{ github.event.issue.title }}
+          issueTitle: ${{ github.event.issue.title }}
+          issueBody: ${{ github.event.issue.body }}
           repo: ${{ github.repository }}
           similaritytolerance: "0.75"
   add-comment: