fix banner link (#621) (#628)

Author: jwilliams-mongo

snooty.toml

@@ -121,5 +121,5 @@ targets = ["command/atlas-dataLakePipelines*.txt"]
 variant = "warning"
 value = """\
     **Data Lake is deprecated.** \
-    As of September 2024, Data Lake is deprecated and will reach end-of-life. It will be removed on September 30, 2025. If you use Data Lake, you should migrate to alternative solutions before the service is removed. To learn more, see :adl:`Migration Guide <data-lake-deprecation/>`\
+    As of September 2024, Data Lake is deprecated and will reach end-of-life. It will be removed on September 30, 2025. If you use Data Lake, you should migrate to alternative solutions before the service is removed. To learn more, see :adl:`Migration Guide </data-lake-deprecation/>`\
     """