docs: format markdown (#2493)

Remove trailing whitespace and extra newlines.

README.md

@@ -90,7 +90,7 @@
       alt="简体中文"
   /></a>
   &nbsp;
-  <a 
+  <a
     href="https://github.com/starship/starship/blob/master/docs/es-ES/guide/README.md"
     ><img
       height="20"
@@ -98,7 +98,7 @@
       alt="Español"
   /></a>
   &nbsp;
-  <a 
+  <a
     href="https://github.com/starship/starship/blob/master/docs/fr-FR/guide/README.md"
     ><img
       height="20"
@@ -106,7 +106,7 @@
       alt="Français"
   /></a>
   &nbsp;
-  <a 
+  <a
     href="https://github.com/starship/starship/blob/master/docs/vi-VN/guide/README.md"
     ><img
       height="20"

docs/config/README.md

@@ -333,7 +333,6 @@ The module is only visible when the device's battery is below 10%.
 | `display`            | [link](#battery-display)          | Display threshold and style for the module.         |
 | `disabled`           | `false`                           | Disables the `battery` module.                      |
 
-
 ### Example
 
 ```toml
@@ -1832,7 +1831,7 @@ By default the module will be shown if any of the following conditions are met:
 | `disabled`          | `false`                              | Disables the `nodejs` module.                      |
 | `not_capable_style` | `bold red`                           | The style for the module when an engines property in `package.json` does not match the NodeJS version. |
 
-### Variables
+### Variables
 
 | Variable | Example    | Description                          |
 | -------- | ---------- | ------------------------------------ |
@@ -2167,7 +2166,6 @@ Python version 2, see example below.
 | pyenv_prefix | `"pyenv "`      | Mirrors the value of option `pyenv_prefix` |
 | virtualenv   | `"venv"`        | The current `virtualenv` name              |
 
-
 ### Example
 
 ```toml
@@ -2273,7 +2271,6 @@ The module will be shown if any of the following conditions are met:
 format = "via [⚙️ $version](red bold)"
 ```
 
-
 ## Scala
 
 The `scala` module shows the currently installed version of Scala.
@@ -2285,7 +2282,6 @@ By default the module will be shown if any of the following conditions are met:
 
 ### Options
 
-
 | Option              | Default                                    | Description                                      |
 | ------------------- | -------------------------------------------| -----------------------------------------------  |
 | `format`            | `"via [${symbol}(${version} )]($style)"`   | The format for the module.                       |
@@ -2315,7 +2311,6 @@ By default the module will be shown if any of the following conditions are met:
 symbol = "🌟 "
 ```
 
-
 ## Shell
 
 The `shell` module shows an indicator for currently used shell.
@@ -2348,6 +2343,7 @@ To enable it, set `disabled` to `false` in your configuration file.
 | indicator   |         | Mirrors the value of `indicator` for currently used shell. |
 
 ### Examples
+
 ```toml
 # ~/.config/starship.toml