Update Apache HTTP Server documentation (2.4.20)

lib/docs/scrapers/apache.rb

@@ -3,10 +3,10 @@ module Docs
     self.name = 'Apache HTTP Server'
     self.slug = 'apache_http_server'
     self.type = 'apache'
-    self.release = '2.4.18'
-    self.base_url = 'http://httpd.apache.org/docs/2.4/en/'
+    self.release = '2.4.20'
+    self.base_url = 'https://httpd.apache.org/docs/2.4/en/'
     self.links = {
-      home: 'http://httpd.apache.org/'
+      home: 'https://httpd.apache.org/'
     }
 
     html_filters.push 'apache/clean_html', 'apache/entries'