Fix build error

Author: dellis1972

Resources/MonoGame.Library.X.txt

@@ -7,7 +7,7 @@
     <Description>This package contains binaries for {X} library built for usage with MonoGame.</Description>
     <PackageIcon>Icon.png</PackageIcon>
     <IncludeBuildOutput>false</IncludeBuildOutput>
-    <PackageLicenseFile>{LicenceName}</PackageLicenseFile>
+    <PackageLicenseFile>{LicenseName}</PackageLicenseFile>
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>