Apply pencil edit for blocking issue from PR review

Author: Court72

docs/t-sql/spatial-geometry/astextzm-geometry-data-type.md

@@ -55,4 +55,4 @@ SELECT @g.AsTextZM();
 
 - [Extended Methods on Geometry Instances](../../t-sql/spatial-geometry/extended-methods-on-geometry-instances.md)
 - [M (geometry Data Type)](../../t-sql/spatial-geometry/m-geometry-data-type.md)
-- - [Z (geometry Data Type)](../../t-sql/spatial-geometry/z-geometry-data-type.md)
+- [Z (geometry Data Type)](../../t-sql/spatial-geometry/z-geometry-data-type.md)