Update index.md

Author: ccbogel

docs/index.md

@@ -56,7 +56,7 @@ The exectuable binaries:
 
 [QualCoder_3.8.2_Ubuntu](https://github.com/ccbogel/QualCoder/releases/download/3.8.2/QualCoder_3_8_2_ubuntu)
 
-## Donationr
+## Donations
 
 It has taken many, many hours of work to create this software that is provided free to use. If you appreciate QualCoder please: [Buy me a coffee](https://www.buymeacoffee.com/ccbogelB)
 QualCoder is written in python using Qt6 for the graphical interface. QualCoder has been used on Windows 11, macOS and various Linux distros: Ubuntu, Lubuntu, ZorinOS, Arch, Fedora.