Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index ee99a9f..9e22085 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -1616,7 +1616,7 @@
 		err = logfs_write_buf(inode, page, flags);
 		if (!err && shrink_level(gc_level) == 0) {
 			/* Rewrite cannot mark the inode dirty but has to
-			 * write it immediatly.
+			 * write it immediately.
 			 * Q: Can't we just create an alias for the inode
 			 * instead?  And if not, why not?
 			 */