Fix whitespace: Convert tabs to spaces and remove trailing whitespace.

doc/mainpage.hpp

@@ -14,24 +14,24 @@
 ///
 /// #include <SFML/Audio.hpp>
 /// #include <SFML/Graphics.hpp>
-/// 
+///
 /// int main()
 /// {
 ///     // Create the main window
 ///     sf::RenderWindow window(sf::VideoMode(800, 600), "SFML window");
-/// 
+///
 ///     // Load a sprite to display
 ///     sf::Texture texture;
 ///     if (!texture.loadFromFile("cute_image.jpg"))
 ///         return EXIT_FAILURE;
 ///     sf::Sprite sprite(texture);
-/// 
+///
 ///     // Create a graphical text to display
 ///     sf::Font font;
 ///     if (!font.loadFromFile("arial.ttf"))
 ///         return EXIT_FAILURE;
 ///     sf::Text text("Hello SFML", font, 50);
-/// 
+///
 ///     // Load a music to play
 ///     sf::Music music;
 ///     if (!music.openFromFile("nice_music.ogg"))
@@ -39,7 +39,7 @@
 ///
 ///     // Play the music
 ///     music.play();
-/// 
+///
 ///     // Start the game loop
 ///     while (window.isOpen())
 ///     {
@@ -51,20 +51,20 @@
 ///             if (event.type == sf::Event::Closed)
 ///                 window.close();
 ///         }
-/// 
+///
 ///         // Clear screen
 ///         window.clear();
-/// 
+///
 ///         // Draw the sprite
 ///         window.draw(sprite);
-/// 
+///
 ///         // Draw the string
 ///         window.draw(text);
-/// 
+///
 ///         // Update the window
 ///         window.display();
 ///     }
-/// 
+///
 ///     return EXIT_SUCCESS;
 /// }
 /// \endcode