Fix incorrect jq parsing for sanity tests for SharePoint (#3377)

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- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

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- [ ] 🐛 Bugfix
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#### Test Plan

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- [ ] ⚡ Unit test
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.github/workflows/sanity-test.yaml

@@ -439,7 +439,7 @@ jobs:
 
           resultjson=$(sed -e '1,/Completed Backups/d' $TEST_RESULT/backup_sharepoint.txt ) 
 
-          if  [[ $( echo $resultjson | jq -r '.[0] | .errorCount') -ne 0 ]]; then
+          if  [[ $( echo $resultjson | jq -r '.[0] | .stats.errorCount') -ne 0 ]]; then
             echo "backup was not successful"
             exit 1
           fi
@@ -525,7 +525,7 @@ jobs:
           
           resultjson=$(sed -e '1,/Completed Backups/d' $TEST_RESULT/backup_sharepoint_incremental.txt ) 
 
-          if  [[ $( echo $resultjson | jq -r '.[0] | .errorCount') -ne 0 ]]; then
+          if  [[ $( echo $resultjson | jq -r '.[0] | .stats.errorCount') -ne 0 ]]; then
             echo "backup was not successful"
             exit 1
           fi