fix: MD012/no-multiple-blanks

Author: nschonni

docs/dotnet/auto-gcroot-class.md

@@ -42,7 +42,6 @@ The managed type to be embedded.
 |[auto_gcroot::reset](#reset)|Destroy the current owned object and optionally take possession of a new object.|
 |[auto_gcroot::swap](#swap)|Swaps objects with another `auto_gcroot`.|
 
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 ### Public operators
 
 |Name|Description|