Use trim in examples instead of deprecated strip

Author: christopheradams

README.md

@@ -194,14 +194,14 @@ are provided here as examples of the preferred style.
  some_string =
  "Hello"
  |> String.downcase()
- |> String.strip()
+ |> String.trim()
  another_string <> some_string
 
  # preferred
  some_string =
  "Hello"
  |> String.downcase()
- |> String.strip()
+ |> String.trim()
 
  another_string <> some_string
  ```
@@ -351,10 +351,10 @@ are provided here as examples of the preferred style.
 
  ```elixir
  # not preferred
- some_string |> String.downcase |> String.strip
+ some_string |> String.downcase |> String.trim
 
  # preferred
- some_string |> String.downcase() |> String.strip()
+ some_string |> String.downcase() |> String.trim()
  ```
 
 * <a name="function-names-with-parentheses"></a>
@@ -448,22 +448,22 @@ generally preferred practice.
 
  ```elixir
  # not preferred
- String.strip(String.downcase(some_string))
+ String.trim(String.downcase(some_string))
 
  # preferred
- some_string |> String.downcase() |> String.strip()
+ some_string |> String.downcase() |> String.trim()
 
  # Multiline pipelines are not further indented
  some_string
  |> String.downcase()
- |> String.strip()
+ |> String.trim()
 
  # Multiline pipelines on the right side of a pattern match
  # should be indented on a new line
  sanitized_string =
  some_string
  |> String.downcase()
- |> String.strip()
+ |> String.trim()
  ```
 
  While this is the preferred method, take into account that copy-pasting
@@ -489,10 +489,10 @@ generally preferred practice.
 
  ```elixir
  # not preferred
- String.strip(some_string) |> String.downcase() |> String.codepoints()
+ String.trim(some_string) |> String.downcase() |> String.codepoints()
 
  # preferred
- some_string |> String.strip() |> String.downcase() |> String.codepoints()
+ some_string |> String.trim() |> String.downcase() |> String.codepoints()
  ```
 
 * <a name="parentheses"></a>