Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index ec73ed7..a4e23d6 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -657,7 +657,7 @@
  * @sdp: the file system
  *
  * This function flushes data and meta data for all machines by
- * aquiring the transaction log exclusively.  All journals are
+ * acquiring the transaction log exclusively.  All journals are
  * ensured to be in a clean state as well.
  *
  * Returns: errno