clarify --help

README.md

@@ -117,7 +117,7 @@ FLAGS:
         --force                          Ignore 'binary data detected', 'the page is too huge', 'param_template lacks
                                          variables' error messages
     -h, --help                           Prints help information
-        --http2                          Use http/2 instead of http/1.1
+        --http2                          Prefer http/2 over http/1.1
         --insecure                       Use http instead of https when the request file is used
         --is-json                        If the output is valid json and the content type does not contain 'json'
                                          keyword - specify this argument for a more accurate search

src/args.rs

@@ -226,7 +226,7 @@ pub fn get_config() -> (Config, usize) {
         .arg(
             Arg::with_name("http2")
                 .long("http2")
-                .help("Use http/2 instead of http/1.1")
+                .help("Prefer http/2 over http/1.1")
         );
 
     let args = app.clone().get_matches();