Typo fix

Author: sanketverma1704

datasets/index.md

@@ -30,6 +30,6 @@ feel free to send a PR to the website <a href="https://github.com/zarr-developer
 Please ensure the dataset you're adding to the list is public, free to use,
 documented, and illustrate the application of Zarr within a specific domain.<br><br>
 
-Please only include URLs that you expect to be stable and maintained and is
-stable/maintained in the foreseeable future.
+Please only include URLs that you expect to be stable and maintained in the
+foreseeable future.
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