Add note about missing values

README.md

@@ -3260,9 +3260,16 @@ size_categories:
 
 <!-- Provide a quick summary of the dataset. -->
 
-A dataset containing sentences from projects hosted on [Weblate](https://hosted.weblate.org) and their translations into other languages.
+A dataset containing strings from projects hosted on [Weblate](https://hosted.weblate.org) and their translations into other languages.
 Please consider [donating](https://weblate.org/en/donate/) or [contributing](https://weblate.org/en/contribute/) to Weblate if you find this dataset useful.
 
+To avoid rows with values like "None" and "N/A" being interpreted as missing values, pass the keep_default_na parameter like this:
+```
+from datasets import load_dataset
+
+dataset = load_dataset("ayymen/Weblate-Translations", keep_default_na=False)
+```
+
 ## Dataset Details
 
 ### Dataset Description