more acrolinx updtes

Author: markingmyname

docs/t-sql/functions/approx-percentile-disc-transact-sql.md

@@ -57,7 +57,7 @@ Approximate percentile functions use KLL sketch. The sketch is built by reading
 
 This function provides rank-based error guarantees not value based. The function implementation guarantees up to a 1.33% error rate within a 99% probability.
 
-## Known Behaviors
+## Known issues
 
 - If the trace flag is not enabled below error message would be raised
 
@@ -69,13 +69,13 @@ This function provides rank-based error guarantees not value based. The function
   Msg 9836, Level 16, State 10, Line 17 </br>
   Internal APPROX_PERCENTILE_* runtime error('6'): APPROX_PERCENTILE_* add item  </br>
 
-  To  workaround above error, use cast/convert to change decimal or numeric data type to float data type or use continuous approximate percentile function.
+  Workaround: Use the cast/convert to change decimal or numeric data type to float data type or use continuous approximate percentile function.
 
 - The output of the functions may not be the same in all executions. The algorithm used for these functions is [KLL sketch](https://arxiv.org/pdf/1603.05346v2.pdf) which is a randomized algorithm. Every time the sketch is built, random values are picked. These functions provide rank-based error guarantees not value based.
 
 - The function implementation guarantees up to a 1.33% error bounds within a 99% confidence.
 
-## Compatibility Support
+## Compatibility support
 
 Under compatibility level 110 and higher, WITHIN GROUP is a reserved keyword. For more information, see [ALTER DATABASE Compatibility Level (Transact-SQL).](/sql/t-sql/statements/alter-database-transact-sql-compatibility-level).