Update docs/code-quality/c6201.md

Co-authored-by: Michael Squires <[email protected]>

Author: MugBergerFries

docs/code-quality/c6201.md

@@ -21,7 +21,7 @@ Code analysis name: INDEX_EXCEEDS_MAX
 
 ## Example
 
-The following code generates this warning. This issue stems from the **`for`** loop exceedeeding the index range, attempting to access the 14th index when the 13th is the last:
+The following code generates this warning. This issue stems from the **`for`** loop exceeding the index range, attempting to access the index 14 (the 15th element) when the index 13 (the 14th element) is the last:
 
 ```cpp
 int buff[14]; // array of 0..13 elements