Update wordpress

Changes:

- https://github.com/docker-library/wordpress/commit/f614686: Merge pull request https://github.com/docker-library/wordpress/pull/411 from haozhou/master
- https://github.com/docker-library/wordpress/commit/a4eef48: Adjust for templating, add more comments, adjust default log configuration so it works out-of-the-box
- https://github.com/docker-library/wordpress/commit/fb61310: Enable mod_remoteip and add config for X-Forwarded-For IP address

library/wordpress

@@ -6,7 +6,7 @@ GitRepo: https://github.com/docker-library/wordpress.git
 
 Tags: 5.2.3-php7.1-apache, 5.2-php7.1-apache, 5-php7.1-apache, php7.1-apache, 5.2.3-php7.1, 5.2-php7.1, 5-php7.1, php7.1
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a7a0a5225cad3cc7328a7d83fd8231787e39b0f9
+GitCommit: a4eef486a9165414340cbd5bba16bbd4fd7905dc
 Directory: php7.1/apache
 
 Tags: 5.2.3-php7.1-fpm, 5.2-php7.1-fpm, 5-php7.1-fpm, php7.1-fpm
@@ -21,7 +21,7 @@ Directory: php7.1/fpm-alpine
 
 Tags: 5.2.3-php7.2-apache, 5.2-php7.2-apache, 5-php7.2-apache, php7.2-apache, 5.2.3-php7.2, 5.2-php7.2, 5-php7.2, php7.2
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le
-GitCommit: a7a0a5225cad3cc7328a7d83fd8231787e39b0f9
+GitCommit: a4eef486a9165414340cbd5bba16bbd4fd7905dc
 Directory: php7.2/apache
 
 Tags: 5.2.3-php7.2-fpm, 5.2-php7.2-fpm, 5-php7.2-fpm, php7.2-fpm
@@ -36,7 +36,7 @@ Directory: php7.2/fpm-alpine
 
 Tags: 5.2.3-apache, 5.2-apache, 5-apache, apache, 5.2.3, 5.2, 5, latest, 5.2.3-php7.3-apache, 5.2-php7.3-apache, 5-php7.3-apache, php7.3-apache, 5.2.3-php7.3, 5.2-php7.3, 5-php7.3, php7.3
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le
-GitCommit: a7a0a5225cad3cc7328a7d83fd8231787e39b0f9
+GitCommit: a4eef486a9165414340cbd5bba16bbd4fd7905dc
 Directory: php7.3/apache
 
 Tags: 5.2.3-fpm, 5.2-fpm, 5-fpm, fpm, 5.2.3-php7.3-fpm, 5.2-php7.3-fpm, 5-php7.3-fpm, php7.3-fpm