Correct subtitle NHS-R in gallery

Author: cderv

docs/gallery/gallery.yml

@@ -340,7 +340,7 @@
       code: https://github.com/AtlasOfLivingAustralia/ala-labs
       thumbnail: websites/website-ala-labs.png
     - title: NHS-R community
-      subtitle: Website for ecological dataviz, analysis & research
+      subtitle: Promoting the use of R and open analytics in health and care
       href: https://nhsrcommunity.com
       code: https://github.com/nhs-r-community/nhs-r-community
       thumbnail: websites/nhs-r-website.png