Apply copliot fixes

Signed-off-by: Samuel Monson <smonson@redhat.com>

Author: sjmonson

src/guidellm/extras/__init__.py

@@ -1,4 +1,4 @@
 """
 Code that depends on optional dependencies.
-Each submodule should be defered imported.
+Each submodule should be deferred imported.
 """

src/guidellm/extras/multimodal.py

@@ -269,7 +269,7 @@ def encode_audio(
     ],
     str | int | float | None,
 ]:
-    """Decode audio (if nessary) and re-encode to specified format."""
+    """Decode audio (if necessary) and re-encode to specified format."""
     samples = _decode_audio(audio, sample_rate=sample_rate, max_duration=max_duration)
 
     bitrate_val = (