Fix capitalization in xref links (#902)

xref links in https://docs.microsoft.com/en-us/qsharp/api/qsharp/microsoft.quantum.diagnostics.assertqubitwithintolerance and https://docs.microsoft.com/en-us/qsharp/api/qsharp/microsoft.quantum.diagnostics.assertqubit don't render as links. I believe docgen doesn't recognize API links if they are given in lowercase, it needs proper capitalization in xref.

Co-authored-by: XField <58103249+vxfield@users.noreply.github.com>

Author: tcNickolas

src/Simulation/QSharpFoundation/Diagnostics/AssertQubit.qs

@@ -19,7 +19,7 @@ namespace Microsoft.Quantum.Diagnostics {
     /// - AssertQubitIsInStateWithinTolerance
     ///
     /// # Remarks
-    /// <xref:microsoft.quantum.diagnostics.assertqubitisinstatewithintolerance> allows for asserting
+    /// <xref:Microsoft.Quantum.Diagnostics.AssertQubitIsInStateWithinTolerance> allows for asserting
     /// arbitrary qubit states rather than only $Z$ eigenstates.
     ///
     /// Note that the Adjoint and Controlled versions of this operation will not
@@ -47,7 +47,7 @@ namespace Microsoft.Quantum.Diagnostics {
     /// - AssertQubitIsInStateWithinTolerance
     ///
     /// # Remarks
-    /// <xref:microsoft.quantum.diagnostics.assertqubitisinstatewithintolerance> allows for asserting
+    /// <xref:Microsoft.Quantum.Diagnostics.AssertQubitIsInStateWithinTolerance> allows for asserting
     /// arbitrary qubit states rather than only $Z$ eigenstates.
     ///
     /// Note that the Adjoint and Controlled versions of this operation will not