Typo fix in README.md.

README.md

@@ -93,7 +93,7 @@ There is a comprehensive tutorial also here: https://blog.jakelee.co.uk/getting-
 
 #### On Linux
 
-On Ubuntu Linus, you need to install the necessary packages with the following command:
+On Ubuntu Linux, you need to install the necessary packages with the following command:
 ```
 sudo apt install --no-install-recommends --no-install-suggests texlive-plain-generic texlive-latex-extra texlive-lang-european latexmk texlive-luatex ttf-mscorefonts-installer texlive-bibtex-extra biber python3-pygments
 ```