patch 8.2.2160: various typos

Problem:    Various typos.
Solution:   Fix spelling mistakes. (closes #7494)
diff --git a/src/memline.c b/src/memline.c
index 19b87d7..4137a66 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -5562,7 +5562,7 @@
 		     && buf->b_ml.ml_line_count - line <= 1)
 	{
 	    /*
-	     * We are in the last chunk and it is cheap to crate a new one
+	     * We are in the last chunk and it is cheap to create a new one
 	     * after this. Do it now to avoid the loop above later on
 	     */
 	    curchnk = buf->b_ml.ml_chunksize + curix + 1;