nixos/*: wether -> whether

nixos/modules/services/computing/slurm/slurm.nix

@@ -67,7 +67,7 @@ in
           type = types.bool;
           default = false;
           description = ''
-            Wether to enable the slurm control daemon.
+            Whether to enable the slurm control daemon.
             Note that the standard authentication method is "munge".
             The "munge" service needs to be provided with a password file in order for
             slurm to work properly (see <literal>services.munge.password</literal>).
@@ -135,7 +135,7 @@ in
         type = types.bool;
         default = false;
         description = ''
-          Wether to provide a slurm.conf file.
+          Whether to provide a slurm.conf file.
           Enable this option if you do not run a slurm daemon on this host
           (i.e. <literal>server.enable</literal> and <literal>client.enable</literal> are <literal>false</literal>)
           but you still want to run slurm commands from this host.

nixos/modules/services/web-apps/codimd.nix

@@ -385,7 +385,7 @@ in
         type = types.bool;
         default = true;
         description = ''
-          Wether to enable email registration.
+          Whether to enable email registration.
         '';
       };
       allowGravatar = mkOption {

nixos/modules/system/boot/kernel_config.nix

@@ -54,7 +54,7 @@ let
         type = types.bool // { merge = mergeFalseByDefault; };
         default = false;
         description = ''
-          Wether option should generate a failure when unused.
+          Whether option should generate a failure when unused.
           Upon merging values, mandatory wins over optional.
         '';
       };