Fix typo in __str__ (#4874)

* Fix typo in __str__

* Update CHANGELOG.md

* Update CHANGELOG.md

Co-authored-by: Evan Pete Walsh <[email protected]>

Author: helboukkouri

CHANGELOG.md

@@ -12,6 +12,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added a new learning rate scheduler: `CombinedLearningRateScheduler`. This can be used to combine different LR schedulers, using one after the other.
 
+### Fixed
+
+- Fixed typo with `LabelField` string representation: removed trailing apostrophe.
 
 ## [v1.3.0](https://github.com/allenai/allennlp/releases/tag/v1.3.0) - 2020-12-15
 

allennlp/data/fields/label_field.py

@@ -106,7 +106,7 @@ def empty_field(self):
         return LabelField(-1, self._label_namespace, skip_indexing=True)
 
     def __str__(self) -> str:
-        return f"LabelField with label: {self.label} in namespace: '{self._label_namespace}'.'"
+        return f"LabelField with label: {self.label} in namespace: '{self._label_namespace}'."
 
     def __len__(self):
         return 1