Fix typo in hdf2ckl usage section

Signed-off-by: Joyce Quach <[email protected]>

README.md

@@ -441,7 +441,7 @@ convert hdf2ckl               Translate a Heimdall Data Format JSON file into a
                               DISA checklist file
 
   USAGE
-    $ saf convert hdf2ckl saf convert hdf2ckl -i <hdf-scan-results-json> -o <output-ckl> [-h] [-m <metadata>] [--profilename <value>] [--profiletitle <value>] [--version <value>] [--releasenumber <value>] [--releasedate <value>] [--marking <value>] [-H <value>] [-I <value>] [-M <value>] [-F <value>] [--targetcomment <value>] [--role Domain Controller|Member Server|None|Workstation] [--assettype Computing|Non-Computing] [--techarea |Application Review|Boundary Security|CDS Admin Review|CDS Technical Review|Database Review|Domain Name System (DNS)|Exchange Server|Host Based System Security (HBSS)|Internal Network|Mobility|Other Review|Releasable Networks (REL)|Releaseable Networks (REL)|Traditional Security|UNIX OS|VVOIP Review|Web Review|Windows OS] [--stigguid <value>] [--targetkey <value>] [--webdbsite <value> --webordatabase] [--webdbinstance <value> ] [--vulidmapping gid|id]
+    $ saf convert hdf2ckl -i <hdf-scan-results-json> -o <output-ckl> [-h] [-m <metadata>] [--profilename <value>] [--profiletitle <value>] [--version <value>] [--releasenumber <value>] [--releasedate <value>] [--marking <value>] [-H <value>] [-I <value>] [-M <value>] [-F <value>] [--targetcomment <value>] [--role Domain Controller|Member Server|None|Workstation] [--assettype Computing|Non-Computing] [--techarea |Application Review|Boundary Security|CDS Admin Review|CDS Technical Review|Database Review|Domain Name System (DNS)|Exchange Server|Host Based System Security (HBSS)|Internal Network|Mobility|Other Review|Releasable Networks (REL)|Releaseable Networks (REL)|Traditional Security|UNIX OS|VVOIP Review|Web Review|Windows OS] [--stigguid <value>] [--targetkey <value>] [--webdbsite <value> --webordatabase] [--webdbinstance <value> ] [--vulidmapping gid|id]
 
   FLAGS
     -h, --help            Show CLI help.