Fix typo in comment.

Etsuro Fujita · Etsuro Fujita · commit f505bec711f6 · 2022-03-30T19:00:00.000+09:00
diff --git a/src/backend/commands/copyfrom.c b/src/backend/commands/copyfrom.c
@@ -315,7 +315,7 @@ CopyMultiInsertBufferFlush(CopyMultiInsertInfo *miinfo,
 
 	/*
 	 * Print error context information correctly, if one of the operations
-	 * below fail.
+	 * below fails.
 	 */
 	cstate->line_buf_valid = false;
 	save_cur_lineno = cstate->cur_lineno;
