Fix MatchFileNameOnly parameter default value

According to the [FindInList.cs](https://github.com/dotnet/msbuild/blob/b6420ea6bd0a1b4f71cdf9bc49932bbcacdbdc35/src/Tasks/FindInList.cs#L40) file at this point of history, the default value of `MatchFileNameOnly` is false.

Author: Israel Soto

docs/msbuild/findinlist-task.md

@@ -35,7 +35,7 @@ In a specified list, finds an item that has the matching itemspec.
 |`ItemFound`|Optional <xref:Microsoft.Build.Framework.ITaskItem>`[]` read-only output parameter.<br /><br /> The first matching item found in the list, if any.|
 |`ItemSpecToFind`|Required `String` parameter.<br /><br /> The itemspec to search for.|
 |`List`|Required <xref:Microsoft.Build.Framework.ITaskItem>`[]` parameter.<br /><br /> The list in which to search for the itemspec.|
-|`MatchFileNameOnly`|Optional `Boolean` parameter.<br /><br /> If `true`, match against just the file name part of the itemspec; otherwise, match against the whole itemspec. Default value is `true`.|
+|`MatchFileNameOnly`|Optional `Boolean` parameter.<br /><br /> If `true`, match against just the file name part of the itemspec; otherwise, match against the whole itemspec. Default value is `false`.|
 
 ## Remarks