docs(cli): clarify checkupdates option

Clarify that --use-checkupdates replaces pacman when checking for
available package updates.

Update the README usage output to match the revised CLI help text.

2 files changed, 3 insertions, 3 deletions

diff --git a/README.md b/README.md
index 4a5e90f..e0e54d4 100644
--- a/README.md
+++ b/README.md
@@ -45,8 +45,8 @@ Options:
                                   Directory where the Prometheus collector
                                   textfile will be written.
                                   [default: /var/lib/prometheus/node-exporter]
-  --use-checkupdates              Use checkupdates instead of pacman --query
-                                  --upgrades to check for available updates.
+  --use-checkupdates              Use checkupdates instead of pacman to check for
+                                  available package updates.
   --aur                           Include AUR updates.
   --aur-command TEXT              Command used to check for AUR updates.
   --color [auto|always|never]     Colorize the output. A bare --color is the
diff --git a/prometheus_pacman_exporter/__init__.py b/prometheus_pacman_exporter/__init__.py
index 73f0945..30bd853 100644
--- a/prometheus_pacman_exporter/__init__.py
+++ b/prometheus_pacman_exporter/__init__.py
@@ -170,7 +170,7 @@ def run_command(
     "use_checkupdates_flag",
     is_flag=True,
     default=False,
-    help="Use checkupdates to check for package updates.",
+    help="Use checkupdates instead of pacman to check for available package updates.",
 )
 @click.option(
     "--aur", "aur_flag", is_flag=True, default=False, help="Include AUR updates."