docs: clarify wording; add examples and remove redundancies

docs/manual/try-it-out.md

@@ -26,7 +26,12 @@ $ nix run github:notashelf/nvf#nix
 $ nix run github:notashelf/nvf#maximal
 ```
 
-### Available Configs {#sec-available-configs}
+### Available Configurations {#sec-available-configs}
+
+:::{.info}
+
+The below configurations are provided for demonstration purposes, and are
+**not** designed to be installed as is. You may
 
 #### Nix {#sec-configs-nix}
 
@@ -34,15 +39,32 @@ $ nix run github:notashelf/nvf#maximal
 a set of visual and functional plugins. By running `nix run .#`, which is the
 default package, you will build Neovim with this config.
 
+```bash
+$ nix run github:notashelf/nvf#nix test.nix
+```
+
+This command will start Neovim with some opinionated plugin configurations, and
+is designed specifically for Nix. the `nix` configuration lets you see how a
+fully configured Neovim setup _might_ look like without downloading too many
+packages or shell utilities.
+
 #### Maximal {#sec-configs-maximal}
 
 `Maximal` is the ultimate configuration that will enable support for more
 commonly used language as well as additional complementary plugins. Keep in
 mind, however, that this will pull a lot of dependencies.
 
-::: {.tip}
+```bash
+$ nix run github:notashelf/nvf#maximal -- test.nix
+```
 
-You are _strongly_ recommended to use the binary cache if you would like to try
-the Maximal configuration.
+It uses the same configuration template with the [Nix](#sec-configs-nix)
+configuration, but supports many more languages, and enables more utility,
+companion or fun plugins.
+
+::: {.warning}
+
+Running the maximal config will download _a lot_ of packages as it is
+downloading language servers, formatters, and more.
 
 :::