Update README.md

Author: StuartIanNaylor

cvt2f2fs/README.md

@@ -70,7 +70,7 @@ Also there is one more thing that is confusing me
 ```
 
 f2fs has a optimised discard policy built in by default, but every example i see has an fstab or mount option with the discard directive set.
-I keep thinking is it fundemental to the file system surely we don't use the discard method that say ext4 would use.
+I keep thinking if it is inherant to the file system surely we don't use the discard method that say ext4 would use.
 But it is confusing why with f2fs its specified at mkfs.f2fs -t 1 /dev/mmcblk0p2 and is the default.
 Dunno it doesn't make sense to need mount or fstab discard entries when its already set on creation?