Improve documentation.

include/instance.hpp

@@ -24,14 +24,17 @@ namespace mastodonpp
 
 using std::string;
 
+/*!
+ *  @brief  Holds the hostname and access token of an instance.
+ *
+ *  @since  0.1.0
+ */
 class Instance
 {
 public:
     /*!
      *  @brief  Construct a new Instance object.
      *
-     *  Holds the hostname and access token of the instance.
-     *
      *  @param  instance     The hostname of the instance.
      *  @param  access_token Your access token.
      *

include/request.hpp

@@ -22,9 +22,21 @@
 namespace mastodonpp
 {
 
+/*!
+ *  @brief  Used to make a request to the Mastodon API.
+ *
+ *  @since  0.1.0
+ */
 class Request
 {
 public:
+    /*!
+     *  @brief  Construct a new Request object.
+     *
+     *  @param  instance An Instance with the access data.
+     *
+     *  @since  0.1.0
+     */
     explicit Request(Instance &instance);
 
 private:

include/return_types.hpp

@@ -30,7 +30,7 @@ using std::string;
 using std::string_view;
 
 /*!
- *  @brief  Return type for API calls.
+ *  @brief  Return type for Request%s.
  *
  *  @since  0.1.0
  *
@@ -67,21 +67,21 @@ struct answer
     string body;
 
     /*!
-     *  @brief  Returns true if answer::error_code is 0, false otherwise.
+     *  @brief  Returns true if #error_code is 0, false otherwise.
      *
      *  @since  0.1.0
      */
     explicit operator bool() const;
 
     /*!
-     *  @brief  Returns answer::body as std::string_view.
+     *  @brief  Returns #body as `std::string_view`.
      *
      *  @since  0.1.0
      */
     explicit operator string_view() const;
 
     /*!
-     *  @brief  Returns answer::body as std::ostream.
+     *  @brief  Returns #body as `std::ostream`.
      *
      *  @since  0.1.0
      */