title: Elixir - How to convert keyword list to string?
body: <p>I have a keyword list: <code>[key1: "value", key2: "value2", key3: "value3"]</code></p>
  
  <p>I want to convert it into a string: <code>"key1:value1&amp;key2:value2&amp;key3:value3"</code></p>
  
  <p>I was thinking to use Enum.reduce, but what will be the arguments to the function?</p>