README.md: Replace "targetting" by "targets"

Author: hartwork

README.md

@@ -7,13 +7,13 @@
 # Branches of Interest
 
 - [`0.4.x`](https://github.com/Libvisual/libvisual/tree/0.4.x) —
-  targetting version 0.4.x,
+  targets version 0.4.x,
   uses C99 and C++11,
   maintenance,
   bugfixes only
 
 - [`master`](https://github.com/Libvisual/libvisual/tree/master) —
-  targetting version 0.5.x and beyond,
+  targets version 0.5.x and beyond,
   uses C11 and C++20,
   development