CLEANUP: assorted typo fixes in the code and comments

This is 25th iteration of typo fixes

(cherry picked from commit 01881087fc0ad9922d6d5833766e30c032da1e1d)
[wt: dropped non-relevant parts]
Signed-off-by: Willy Tarreau <w@1wt.eu>
diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index fea9a01..e4609d3 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -1725,7 +1725,7 @@
 	reuse_wbuf = 0;
 	wbuf = q_wbuf(qc);
 	qel = &qc->els[tel];
-	/* When entering this function, the writter buffer must be empty.
+	/* When entering this function, the writer buffer must be empty.
 	 * Most of the time it points to the reader buffer.
 	 */
 	while ((q_buf_empty(wbuf) || reuse_wbuf)) {