[DocAsCode] fix GlobRegexItem
[DocAsCode] fix GlobRegexItem

dotnet/docfx,LordZoltan/docfx,superyyrrzz/docfx,928PJY/docfx,sergey-vershinin/docfx,DuncanmaMSFT/docfx,superyyrrzz/docfx,dotnet/docfx,hellosnow/docfx,928PJY/docfx,pascalberger/docfx,sergey-vershinin/docfx,LordZoltan/docfx,dotnet/docfx,DuncanmaMSFT/docfx,pascalberger/docfx,superyyrrzz/docfx,hellosnow/docfx,928PJY/docfx,LordZoltan/docfx,sergey-vershinin/docfx,pascalberger/docfx,hellosnow/docfx,LordZoltan/docfx