readme coverage badge tweaks

Author: softwareengineerprogrammer

README.rst

@@ -19,10 +19,10 @@ Free software: `MIT license <LICENSE>`__
     :stub-columns: 1
 
     * - tests
-      - | |github-actions|
-          |coverage|
+      - | |github-actions| |coverage|
     * - package
       - | |commits-since|
+
 .. TODO add the following to package badge list once PyPy distribution enabled: |version| |wheel| |supported-versions| |supported-implementations|
 ..    * - docs
 ..      - | |docs|
@@ -57,10 +57,11 @@ Free software: `MIT license <LICENSE>`__
     :alt: Documentation Status
 
 .. |coverage| image:: https://coveralls.io/repos/github/softwareengineerprogrammer/GEOPHIRES-X/badge.svg
-    :target: https://coveralls.io/github/softwareengineerprogrammer/GEOPHIRES-X
+    :target: https://coveralls.io/github/softwareengineerprogrammer/GEOPHIRES-X?branch=main
     :alt: Coverage Status
 
 
+
 .. end-badges
 
 Getting Started