README.md: correct sentence

Author: deining

README.md

@@ -115,7 +115,7 @@ Error: Error building site: "C:\Users\foo\path\to\docsy-example\content\en\_inde
 Built in 27 ms
 ```
 
-This error occurs if are running an outdated version of Hugo. As of docsy theme version `v0.7.0`, hugo version `0.110.0` or higher is required.
+This error occurs if you are running an outdated version of Hugo. As of docsy theme version `v0.7.0`, hugo version `0.110.0` or higher is required.
 See this [section](https://www.docsy.dev/docs/get-started/docsy-as-module/installation-prerequisites/#install-hugo) of the user guide for instructions on how to install Hugo.
 
 Or you may be confronted with the following error: