Add intersphinx mapping to nextstrain

docs/conf.py

@@ -39,9 +39,10 @@
 github_repository = "cladetime"
 
 intersphinx_mapping = {
+    "nextstrain": ("https://docs.nextstrain.org/projects/nextstrain-dot-org/en/latest/index.html", None),
+    "polars": ("https://docs.pola.rs/api/python/stable", None),
     "python": ("https://docs.python.org/3/", None),
     "sphinx": ("https://www.sphinx-doc.org/en/master/", None),
-    "polars": ("https://docs.pola.rs/api/python/stable", None),
 }
 intersphinx_disabled_domains = ["std"]
 

src/cladetime/cladetime.py

@@ -25,8 +25,9 @@ class CladeTime:
     Parameters
     ----------
     sequence_as_of : datetime.datetime | str | None
-        Sets the versions of Nextstrain SARS-CoV-2 genome sequence
-        and sequence metadata files that will be used by
+        Sets the versions of Nextstrain SARS-CoV-2
+        :external+nextstrain:ref:`ingest datasets <ingest dataset>`
+        (genome sequence and sequence metadata) files that will be used by
         CladeTime properties and methods. Can be a datetime object or a
         string in YYYY-MM-DD format, both of which will be treated as
         UTC. The default value is the current time.