README, man, apparmor: Update configuration file path

Because of commit 9ff0501.

README.md

@@ -39,7 +39,7 @@ automatic location provider. An example configuration can be found in
 The configuration file should be saved in the following location depending on
 the platform:
 
-- Linux/macOS: `~/.config/redshift.conf`.
+- Linux/macOS: `~/.config/redshift/redshift.conf` (if the environment variable `XDG_CONFIG_HOME` is undefined) or `${XDG_CONFIG_HOME}/redshift/redshift.conf` (if `XDG_CONFIG_HOME` is defined).
 - Windows: Put `redshift.conf` in `%USERPROFILE%\AppData\Local\`
     (aka `%localappdata%`).
 

data/apparmor/usr.bin.redshift.in

@@ -35,7 +35,7 @@
   # Allow but log any other dbus activity
   audit dbus bus=system,
 
-  owner @{HOME}/.config/redshift.conf r,
+  owner @{HOME}/.config/redshift/redshift.conf r,
 
   # Site-specific additions and overrides. See local/README for details.
   #include <local/usr.bin.redshift>

redshift.1

@@ -93,7 +93,9 @@ Default temperature values:
 Daytime: 6500K, night: 4500K
 .SH CONFIGURATION FILE
 A configuration file with the name \fIredshift.conf\fR can optionally be
-placed in \fI~/.config/\fR. The file has standard INI format. General
+placed in \fI~/.config/redshift/\fR (if the environment variable
+XDG_CONFIG_HOME is undefined) or \fI${XDG_CONFIG_HOME}/redshift/\fR
+(if XDG_CONFIG_HOME is defined). The file has standard INI format. General
 program options are placed under the \fBredshift\fR header, while options
 for location providers and adjustment methods are placed under a
 header with the name of that provider or method. General options are: