Update donation wording so that it's clear there's no strings attached (#4827)

Author: stefanhaller

pkg/i18n/english.go

@@ -1058,10 +1058,12 @@ Thanks for using lazygit! Seriously you rock. Three things to share with you:
  3) If you're using git, that makes you a programmer! With your help we can make
     lazygit better, so consider becoming a contributor and joining the fun at
       https://github.com/jesseduffield/lazygit
-    You can also sponsor me and tell me what to work on by clicking the donate
-    button at the bottom right.
     Or even just star the repo to share the love!
 
+ 4) If lazygit has made your life easier, you can say thanks by clicking the
+    donate button at the bottom right. Donation does not grant priority support,
+    but it is much appreciated.
+
 Press {{confirmationKey}} to get started.
 `