Update emscripten.h.rst

Author: kripken

site/source/docs/api_reference/emscripten.h.rst

@@ -495,17 +495,17 @@ Functions
 
 .. c:function:: void emscripten_get_window_title()
 
-  Returns the window title
+  Returns the window title.
 
-  The returned string will be valid until the next call of the function
+  The returned string will be valid until the next call of the function.
 
 .. c:function:: void emscripten_set_window_title(char *title)
 
-  Sets the window title
+  Sets the window title.
 
 .. c:function:: void emscripten_get_screen_size(int *width, int *height)
 
-  Returns the width and height of the screen
+  Returns the width and height of the screen.
 
 .. c:function:: void emscripten_hide_mouse(void)