clear code, allow to set overrides for each architecture

package/etc/ahriman.ini

@@ -22,7 +22,7 @@ key =
 [report]
 target =
 
-[html]
+[html_x86_64]
 path =
 css_path =
 link_path =
@@ -30,8 +30,8 @@ link_path =
 [upload]
 target =
 
-[s3]
+[s3_x86_64]
 bucket =
 
-[rsync]
+[rsync_x86_64]
 remote =