fix fallback

Author: bckohan

src/django_typer/shells/__init__.py

@@ -197,7 +197,7 @@ def source_vars(self) -> t.Dict[str, t.Any]:
             else "--no-color"
             if self.command.force_color
             else "",
-            "fallback": f" --fallback {self.command.fallback_import}"
+            "fallback": f"--fallback={self.command.fallback_import}"
             if self.command.fallback
             else "",
             "is_installed": self.is_installed,

src/django_typer/templates/shell_complete/powershell.ps1

@@ -23,7 +23,7 @@ $scriptblock = {
     $arguments = @("{{ django_command }}") +
     @($settingsOption) +
     @($pythonPathOption) +
-    @("--shell", "pwsh", "complete", $commandText, $cursorPosition) |
+    @("--shell", "pwsh", "complete", "{{ fallback }}", $commandText, $cursorPosition) |
     Where-Object { $_ }
 
     $results = & {{ manage_script_name }} @arguments 2>&1