rename the PowerTools leftovers

.circleci/make-rpm-packages.sh

@@ -18,7 +18,7 @@ yum install -y epel-release
 if [ "$PARAM_DIST" = centos ]; then
   if [ "$PARAM_RELEASE" = 8 ]; then
       dnf install -y 'dnf-command(config-manager)'
-      yum config-manager --set-enabled PowerTools
+      yum config-manager --set-enabled powertools
   fi
 fi
 

doc/sphinx/installation/install_source.rst

@@ -87,10 +87,10 @@ Install sphinx
 
 * On Red Hat / CentOS 8, sphinx is not included in the default
   repositories, so execute these steps to include it from the
-  PowerTools repository::
+  powertools repository::
 
     sudo dnf install -y 'dnf-command(config-manager)'
-    sudo yum config-manager --set-enabled PowerTools
+    sudo yum config-manager --set-enabled powertools
     sudo yum install -y diffutils python3-sphinx
 
 * On Red Hat / CentOS <= 7, install sphinx::