fix(lock): remove flakes command from error

The suggested copy paste attribute path is often wrong as it depends on the individual repository setup that dream2nix doesn't control.

Instead now simply hint to `nix run` the .lock attribute

modules/dream2nix/core/lock/default.nix

@@ -133,44 +133,33 @@
           json.dump(checksum, f, indent=2)
     '';
 
+  updateHint = ''
+    To create or update the lock file, run:
+
+      bash -c $(nix-build ${config.lock.refresh.drvPath} --no-link)/bin/refresh
+
+    Alternatively `nix run` the .lock attribute of your package.
+  '';
+
   errorMissingFile = ''
     The lock file ${config.paths.package}/${config.paths.lockFile}
       for drv-parts module '${config.name}' is missing.
 
-    To update it without flakes:
+    ${updateHint}
-
-      bash -c $(nix-build ${config.lock.refresh.drvPath} --no-link)/bin/refresh
-
-    To update it using flakes:
-
-      nix run -L .#${config.name}.config.lock.refresh
   '';
 
   errorOutdated = ''
     The lock file ${config.paths.package}/${config.paths.lockFile}
       for drv-parts module '${config.name}' is outdated.
 
-    To update it without flakes:
+    ${updateHint}
-
-      bash -c $(nix-build ${config.lock.refresh.drvPath} --no-link)/bin/refresh
-
-    To update it using flakes:
-
-      nix run -L .#${config.name}.config.lock.refresh
   '';
 
   errorOutdatedField = field: ''
     The lock file ${config.paths.package}/${config.paths.lockFile}
       for drv-parts module '${config.name}' does not contain field `${field}`.
 
-    To update it without flakes:
+    ${updateHint}
-
-      bash -c $(nix-build ${config.lock.refresh.drvPath} --no-link)/bin/refresh
-
-    To update it using flakes:
-
-      nix run -L .#${config.name}.config.lock.refresh
-
   '';
 
   fileContent =