repart: fix whitespace in option descriptions (#406961)

nixos/modules/image/repart.nix

···
       # Generated with `uuidgen`. Random but fixed to improve reproducibility.
       default = "0867da16-f251-457d-a9e8-c31f9a3c220b";
       description = ''
-          A UUID to use as a seed. You can set this to `null` to explicitly
+        A UUID to use as a seed. You can set this to `null` to explicitly
         randomize the partition UUIDs.
       '';
     };
···
       type = lib.types.bool;
       default = false;
       description = ''
-          Enables generation of split artifacts from partitions. If enabled, for
+        Enables generation of split artifacts from partitions. If enabled, for
         each partition with SplitName= set, a separate output file containing
         just the contents of that partition is generated.
       '';
···
       default = 512;
       example = lib.literalExpression "4096";
       description = ''
-          The sector size of the disk image produced by systemd-repart. This
+        The sector size of the disk image produced by systemd-repart. This
         value must be a power of 2 between 512 and 4096.
       '';
     };
···
       type = with lib.types; attrsOf (submodule partitionOptions);
       default = { };
       example = lib.literalExpression ''
-          {
+        {
           "10-esp" = {
             contents = {
               "/EFI/BOOT/BOOTX64.EFI".source =
···
         };
       '';
       description = ''
-          Specify partitions as a set of the names of the partitions with their
+        Specify partitions as a set of the names of the partitions with their
         configuration as the key.
       '';
     };
···
       type = with lib.types; attrsOf (listOf str);
       default = { };
       example = lib.literalExpression ''
-          {
+        {
           vfat = [ "-S 512" "-c" ];
         }
       '';
       description = ''
-          Specify extra options for created file systems. The specified options
+        Specify extra options for created file systems. The specified options
         are converted to individual environment variables of the format
         `SYSTEMD_REPART_MKFS_OPTIONS_<FSTYPE>`.