docs(formula): use standard structure

FORMULA

@@ -1,8 +1,9 @@
 name: apache
-os: RedHat, Debian, Ubuntu, Suse, FreeBSD
+os: RedHat, Fedora, CentOS, Debian, Ubuntu, Suse, FreeBSD
 os_family: RedHat, Debian, Suse, FreeBSD
-version: 201507
+version: 0.37.4
 release: 1
 minimum_version: 2015.8
 summary: Formula for installing Apache
 description: Formula for installing Apache web server
+top_level_dir: apache