fix typo in coding-style doc

"updated" -> "update"

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>

policies/coding-style.md

@@ -402,7 +402,7 @@ as follows:
 
 - Unconditional statements are easier to understand and follow
 - It can reduce excessive control structures and nesting
-- It avoids errors caused by failing to updated multiple exit points when the code is modified
+- It avoids errors caused by failing to update multiple exit points when the code is modified
 - It saves the compiler work to optimize redundant code away ;)
 
 For example: