Correct casing of Iesi.Collections in PackageReference.

Author: ngbrown

src/NHibernate/NHibernate.csproj

@@ -41,7 +41,7 @@
       <PrivateAssets>All</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Antlr3.Runtime" Version="[3.5.1, 4.0)" />
-    <PackageReference Include="iesi.collections" Version="[4.0.2, 5.0)" />
+    <PackageReference Include="Iesi.Collections" Version="[4.0.2, 5.0)" />
     <PackageReference Include="Remotion.Linq" Version="[2.1.2, 3.0)" />
     <PackageReference Include="Remotion.Linq.EagerFetching" Version="[2.1.0, 3.0)" />
   </ItemGroup>