message: pencil2: fixed typos
diff: @@ -9051,7 +9051,7 @@ class basic_json
  @see https://docs.python.org/2/library/json.html#json.dump
  - @since version 1.0.0; indentation character @a indent_char and option
  + @since version 1.0.0; indentation character @a indent_char, option
  @a ensure_ascii and exceptions added in version 3.0.0
  */
  string_t dump(const int indent = -1, const char indent_char = ' ',
  @@ -12846,7 +12846,7 @@ class basic_json
  `std::setw(4)` on @a o sets the indentation level to `4` and the
  serialization result is the same as calling `dump(4)`.
  - - The indentation characrer can be controlled with the member variable
  + - The indentation character can be controlled with the member variable
  `fill` of the output stream @a o. For instance, the manipulator
  `std::setfill('\\t')` sets indentation to use a tab character rather than
  the default space character.
  @@ -12864,7 +12864,7 @@ class basic_json
  @liveexample{The example below shows the serialization with different
  parameters to `width` to adjust the indentation level.,operator_serialize}
  - @since version 1.0.0; indentaction character added in version 3.0.0
  + @since version 1.0.0; indentation character added in version 3.0.0
  */
  friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
  {
  