Merge branch 'upd210RelNotes' of https://github.com/davidkline-ms/MixedRealityToolkit-Unity into upd210RelNotes

Author: davidkline-ms

Documentation/ReleaseNotes.md

@@ -70,7 +70,7 @@ For the smoothest upgrade path, please use the following steps.
 
 Related to [issue #6144](https://github.com/microsoft/MixedRealityToolkit-Unity/issues/6144): after upgrading, if you have a custom input simulation profile, the input playback service data provider may have a missing class. Click the "Try Repair" button in the profile window to fix the missing reference.
 
-**Updating fron NuGet**
+**Updating from NuGet**
 
 If your project was created using the Mixed Reality Toolkit NuGet packages, please use the following steps.