Revert "Fix docstring"

This reverts commit d2c00fc.

Author: JasonGrace2282

manim/cli/render/global_options.py

@@ -102,7 +102,12 @@ def validate_gui_location(ctx, param, value):
     option(
         "--no_latex_cleanup",
         is_flag=True,
-        help="Prevents deletion of .aux, .dvi, and .log files produced by Tex and MathTex",
+        help="Prevents deletion of .aux, .dvi, and .log files produced by Tex and MathTex.",
+        default=False,
+    ),
+    option(
+        "--preview_command",
+        help="The command to preview the video file (ex: xdg-open on linux). Note that this does not have an effect on Windows",
         default="",
     ),
 )