Added UnicodeReformatter import in docs/curate-text/process-data/content-processing/index.md

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Signed-off-by: Kunal Sachdev <kunalmgsachdev@gmail.com>

Author: KunalSachdev2005

docs/curate-text/process-data/content-processing/index.md

@@ -66,6 +66,7 @@ from nemo_curator.pipeline import Pipeline
 from nemo_curator.stages.text.io.reader import JsonlReader
 from nemo_curator.stages.text.io.writer import JsonlWriter
 from nemo_curator.stages.text.modifiers.heuristic import UrlRemover, NewlineNormalizer
+from nemo_curator.stages.text.modifiers.unicode import UnicodeReformatter
 from nemo_curator.stages.text.modifiers import Modify
 
 # Initialize Ray client