Update short-help/long-help

doc/short-help.txt

@@ -43,6 +43,10 @@ Options:
           Set the color theme for syntax highlighting.
       --list-themes
           Display all supported highlighting themes.
+  -s, --squeeze
+          Squeeze consecutive empty lines.
+      --squeeze-limit <squeeze-limit>
+          The maximum number of consecutive empty lines.
       --style <components>
           Comma-separated list of style elements to display (*default*, auto, full, plain, changes,
           header, header-filename, header-filesize, grid, rule, numbers, snip).