Update README.md

Corrected typo

Author: smaillet

README.md

@@ -48,5 +48,5 @@ additional support - but such PRs ***MUST NOT*** break the VS support.)
 > mechanisms used to eliminate circular dependencies while still supporting automated versioning
 > of the projects themselves. To resolve this, you must run the `.\New-GeneratedVersionProps.ps1`
 > at least once to create the imported `generatedversion.props` file. This is also generated by
-> the `Build-All.ps1` script, which is the recommended means of generated the required file. This
+> the `Build-All.ps1` script, which is the recommended means of generaing the required file. This
 > is only needed the first time (or any time the `buildversion.xml` changes).