CLEANUP: assorted typo fixes in the code and comments

This is 11th iteration of typo fixes
diff --git a/src/flt_http_comp.c b/src/flt_http_comp.c
index 6641249..87f359d 100644
--- a/src/flt_http_comp.c
+++ b/src/flt_http_comp.c
@@ -458,7 +458,7 @@
 }
 
 /*
- * Selects a comression algorithm depending of the server response.
+ * Selects a compression algorithm depending of the server response.
  */
 static int
 select_compression_response_header(struct comp_state *st, struct stream *s, struct http_msg *msg)