update geoviews URL in docs (#4551)

* Fix typo (#4181)

* fix typo in io.rst (#4250)

* Fix release notes typo

* update geoviews URL

update URL to https://geoviews.org

Co-authored-by: Luke Volpatti <luke.volpatti@gmail.com>
Co-authored-by: Michaël Defferrard <m.deff@hotmail.com>
Co-authored-by: Maximilian Roos <m@maxroos.com>

Author: 4 people

doc/plotting.rst

@@ -37,7 +37,7 @@ For more extensive plotting applications consider the following projects:
   Integrates well with pandas.
 
 - `HoloViews <http://holoviews.org/>`_
-  and `GeoViews <http://geo.holoviews.org/>`_: "Composable, declarative
+  and `GeoViews <https://geoviews.org/>`_: "Composable, declarative
   data structures for building even complex visualizations easily." Includes
   native support for xarray objects.
 
@@ -955,4 +955,4 @@ One can also make line plots with multidimensional coordinates. In this case, ``
     f, ax = plt.subplots(2, 1)
     da.plot.line(x="lon", hue="y", ax=ax[0])
     @savefig plotting_example_2d_hue_xy.png
-    da.plot.line(x="lon", hue="x", ax=ax[1])
+    da.plot.line(x="lon", hue="x", ax=ax[1])