Merge pull request #12882 from pmasl/patch-698

Update dbcc-checkalloc-transact-sql.md

Author: PRMerger6

docs/t-sql/database-console-commands/dbcc-checkalloc-transact-sql.md

@@ -88,7 +88,7 @@ DBCC CHECKALLOC
  TABLOCK  
  Causes the DBCC command to obtain an exclusive database lock.
 
- ESTIMATE ONLY  
+ ESTIMATEONLY  
  Displays the estimated amount of tempdb space that is required to run DBCC CHECKALLOC when all the other options are specified.
 
 ## Remarks