Fix typo in the uploader.sh.erb from a previous commit

Author: parthaa

lib/foreman_inventory_upload/scripts/uploader.sh.erb

@@ -30,7 +30,7 @@ fi
 ORG_HEADER=()
 if [ -n "$ORG_ID" ]
 then
-+        ORG_HEADER=("-H" "X-Org-Id: $ORG_ID")
+        ORG_HEADER=("-H" "X-Org-Id: $ORG_ID")
 fi
 
 # /tmp/a b/x.pem