Update cf-plot gallery description where ref'd in docs

Author: sadielbartholomew

docs/source/introduction.rst

@@ -139,12 +139,12 @@ separately to `cf` (see the
 <https://ncas-cms.github.io/cf-plot/build/>`_ for details).
 
 See the `cf-plot gallery
-<https://ncas-cms.github.io/cf-plot/build/gallery.html>`_ for the wide range
+<https://ncas-cms.github.io/cf-plot/gallery_of_examples.html>`_ for the wide range
 of plotting possibilities with example code.
 
 .. figure:: images/new_gallery_view.png
 
-   *Example output of cf-plot displaying a cf field construct.*
+   *Examples gallery of plots made with the cf-plot library.*
 
 ----
 

docs/source/tutorial.rst

@@ -549,10 +549,10 @@ installed separately to cf, see `cf-plot documentation
 
 .. figure:: images/new_gallery_view.png
 
-   *Example output of cf-plot displaying a cf field construct.*
+   *Examples gallery of plots made with the cf-plot library.*
 
 See the `cf-plot gallery
-<https://ncas-cms.github.io/cf-plot/build/gallery.html>`_ for the wide
+<https://ncas-cms.github.io/cf-plot/gallery_of_examples.html>`_ for the wide
 range of plotting possibilities, with example code. These include, but are
 not limited to: