Corrected Grammar errors (publiclab#9465)

README.md

@@ -122,7 +122,7 @@ _kindly note if you choose to use sqlite some tests may fail. The project was se
 We recommend you either work in a virtual environment, or on a dual booted system to avoid dependencies issues and also Unix system works smoother with Ruby and Rails. This will not only benefit you now for plots2, but also in future while working on other Ruby projects, a Linux or Mac based OS will make your development so much smoother. 
 1. [Windows Subsystem for Linux](https://docs.microsoft.com/en-us/windows/wsl/install-win10) (recommended)
 2. [Dual Booting](https://www.tecmint.com/install-ubuntu-alongside-with-windows-dual-boot/amp/), [option2](https://askubuntu.com/questions/1031993/how-to-install-ubuntu-18-04-alongside-windows-10), [video guide](https://www.youtube.com/watch?v=qNeJvujdB-0&fbclid=IwAR0APhs89jlNR_ENKbSwrp6TI6P-wxlx-a0My9XBvPNAfwtADZaAXqcKtP4)
-3. [Setting up a linux virtual env](https://itsfoss.com/install-linux-in-virtualbox/)
+3. [Setting up a Linux virtual env](https://itsfoss.com/install-linux-in-virtualbox/)
 
 ## Redis Installation