[docs] Fix docstring (#3334)

fix docstring
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

src/diffusers/pipelines/pipeline_utils.py

@@ -531,7 +531,7 @@ class DiffusionPipeline(ConfigMixin):
         """
         Save all variables of the pipeline that can be saved and loaded as well as the pipelines configuration file to
         a directory. A pipeline variable can be saved and loaded if its class implements both a save and loading
-        method. The pipeline can easily be re-loaded using the `[`~DiffusionPipeline.from_pretrained`]` class method.
+        method. The pipeline can easily be re-loaded using the [`~DiffusionPipeline.from_pretrained`] class method.
 
         Arguments:
             save_directory (`str` or `os.PathLike`):