docs: generalized DC naming

Author: paulmueller

ckanext/dcor_theme/templates/home/snippets/promoted.html

@@ -8,7 +8,7 @@
       <h1 class="page-heading">Welcome to {{ g.site_title }}</h1>
       <p>
         DCOR, the deformability cytometry open repository, is the home for all your
-        RT-DC data. It is integrated with
+        DC data. It is integrated with
         <a href="https://dclab.readthedocs.io/">dclab</a> and
         <a href="https://shapeout2.readthedocs.io/">Shape-Out</a> so you can
         access and share your data from and with anyone, anywhere.