Suppress further warnings.

.github/workflows/indent.yml

@@ -49,6 +49,18 @@ jobs:
         # warning: @copybrief or @copydoc target '<name>' not found
         # warning: Found recursive @copybrief or @copydoc relation for argument '<arg>'
         sed -i '/@copybrief or @copydoc/d' doxygen.log 
+        # Suppress:
+        # warning: @copydetails or @copydoc target '<name>' not found
+        # warning: Found recursive @copydetails or @copydoc relation for argument '<arg>'
+        sed -i '/@copydetails or @copydoc/d' doxygen.log 
+        # Suppress:
+        # warning: '<name>' has @param documentation sections but no arguments
+        sed -i '/has @param documentation sections but no arguments/d' doxygen.log 
+        # Suppress:
+        # warning: explicit link request to '<function>' could not be resolved
+        sed -i '/explicit link request to/d' doxygen.log
+        # Remove empty lines
+        sed -i '/^$/d' doxygen.log
         ! [ -s doxygen.log ] || exit 1
         tar -czf doxygen_documentation.tar.gz doc/doxygen
     - name: archive documentation