Very simple typo in Readme

I just like corrected the typo. Nice project, really loved it and the documentation is smooth

Author: devvspaces

README.md

@@ -35,7 +35,7 @@ npm install
 npm run start:dev
 ```
 
-If you want to upgrade to a major o minor version, have a look at the [upgrade](#upgrade) section.
+If you want to upgrade to a major or minor version, have a look at the [upgrade](#upgrade) section.
 
 ## Quick start