contributing/coding_style.md: Add missing ">"

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I2f2cd20139f4cdb7ba665e9e49a03faea1ac085b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67658
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
diff --git a/Documentation/contributing/coding_style.md b/Documentation/contributing/coding_style.md
index 67f320a..a0604c9 100644
--- a/Documentation/contributing/coding_style.md
+++ b/Documentation/contributing/coding_style.md
@@ -1002,7 +1002,7 @@
 Dennis M. Ritchie. Prentice Hall, Inc., 1988. ISBN 0-13-110362-8
 (paperback), 0-13-110370-9 (hardback). URL:
 <https://duckduckgo.com/?q=isbn+0-13-110362-8> or
-<https://www.google.com/search?q=isbn+0-13-110362-8.
+<https://www.google.com/search?q=isbn+0-13-110362-8>
 
 
 The Practice of Programming by Brian W. Kernighan and Rob Pike.