Add markdown code type

README.md

@@ -389,7 +389,7 @@ defmodule Tesla.Middleware.SomeMiddleware do
 
   ### Examples
 
-  ```
+  ```elixir
   defmodule MyClient do
     use Tesla
 

lib/tesla/builder.ex

@@ -84,7 +84,7 @@ defmodule Tesla.Builder do
   @doc """
   Attach middleware to your API client.
 
-  ```
+  ```elixir
   defmodule ExampleApi do
     use Tesla
 

lib/tesla/middleware/logger.ex

@@ -60,7 +60,7 @@ defmodule Tesla.Middleware.Logger do
 
   ## Examples
 
-  ```
+  ```elixir
   defmodule MyClient do
     use Tesla
 
@@ -86,13 +86,13 @@ defmodule Tesla.Middleware.Logger do
 
   It can be changed globally with config:
 
-  ```
+  ```elixir
   config :tesla, Tesla.Middleware.Logger, format: "$method $url ====> $status / time=$time"
   ```
 
   Or you can customize this setting by providing your own `format` function:
 
-  ```
+  ```elixir
   defmodule MyClient do
     use Tesla
 
@@ -114,7 +114,7 @@ defmodule Tesla.Middleware.Logger do
 
   You can customize this setting by providing your own `log_level/1` function:
 
-  ```
+  ```elixir
   defmodule MyClient do
     use Tesla
 

lib/tesla/mock.ex

@@ -4,7 +4,7 @@ defmodule Tesla.Mock do
 
   ## Setup
 
-  ```
+  ```elixir
   # config/test.exs
   config :tesla, adapter: Tesla.Mock
 
@@ -14,7 +14,7 @@ defmodule Tesla.Mock do
 
   ## Examples
 
-  ```
+  ```elixir
   defmodule MyAppTest do
     use ExUnit.Case
 
@@ -37,7 +37,7 @@ defmodule Tesla.Mock do
 
   ## Setting up mocks
 
-  ```
+  ```elixir
   # Match on method & url and return whole Tesla.Env
   Tesla.Mock.mock(fn
     %{method: :get, url: "http://example.com/list"} ->
@@ -83,7 +83,7 @@ defmodule Tesla.Mock do
   To solve this issue it is possible to setup a global mock
   using `mock_global/1` function.
 
-  ```
+  ```elixir
   defmodule MyTest do
     use ExUnit.Case, async: false # must be false!