docs(cli/uninstall): reflect multi-package remove with '-g' flag

Author: edilson258

cli/args/flags.rs

@@ -2843,12 +2843,12 @@ Specific version requirements to update to can be specified:
 fn uninstall_subcommand() -> Command {
   command(
     "uninstall",
-    cstr!("Uninstalls a dependency or an executable script in the installation root's bin directory.
+    cstr!("Uninstalls dependencies or an executable script in the installation root's bin directory.
   <p(245)>deno uninstall @std/dotenv chalk</>
   <p(245)>deno uninstall --global file_server</>
 
 To change the installation root, use <c>--root</> flag:
-  <p(245)>deno uninstall --global --root /usr/local serve</>
+  <p(245)>deno uninstall --global --root /usr/local cowsay serve</>
 
 The installation root is determined, in order of precedence:
   - <p(245)>--root</> option
@@ -2870,7 +2870,7 @@ The installation root is determined, in order of precedence:
         Arg::new("global")
           .long("global")
           .short('g')
-          .help("Remove globally installed package or module")
+          .help("Remove globally installed packages or modules")
           .action(ArgAction::SetTrue),
       )
       .arg(