Add prompt symbol to sample in README

Add a typical prompt symbol ($) to the README example to better illustrate that it is a command and its output.
cisagov · Mar 10, 2021 · e3ee077 · e3ee077
1 parent 2b7eac3
commit e3ee077
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -16,7 +16,7 @@ It assumes that ClamAV has been installed using the
 ## Usage ##
 
 ```console
-clamav-report tests/files/inventory.txt clamav-201909.csv
+$ clamav-report tests/files/inventory.txt clamav-201909.csv
 
 2019-09-09 15:39:41,256 INFO Gathering ClamAV data from remote servers.
 2019-09-09 15:39:42,292 WARNING Task callback UNREACHABLE: borked.foo.gov - Gathering Facts