Change doc language from "has been initialized" to "is initialized"

Author: MarkOates

docs/src/refman/acodec.txt

@@ -34,7 +34,7 @@ Return true on success.
 
 ## API: al_is_acodec_addon_initialized
 
-Returns true if the acodec addon has been initialized, otherwise returns false.
+Returns true if the acodec addon is initialized, otherwise returns false.
 
 ## API: al_get_allegro_acodec_version
 

docs/src/refman/font.txt

@@ -73,7 +73,7 @@ See also: [al_init_image_addon], [al_init_ttf_addon], [al_shutdown_font_addon]
 
 ### API: al_is_font_addon_initialized
 
-Returns true if the font addon has been initialized, otherwise returns false.
+Returns true if the font addon is initialized, otherwise returns false.
 
 See also: [al_init_image_addon], [al_shutdown_font_addon]
 
@@ -704,7 +704,7 @@ Returns true on success, false on failure.
 
 ### API: al_is_ttf_addon_initialized
 
-Returns true if the TTF addon has been initialized, otherwise returns false.
+Returns true if the TTF addon is initialized, otherwise returns false.
 
 See also: [al_init_ttf_addon], [al_shutdown_ttf_addon]
 

docs/src/refman/image.txt

@@ -31,7 +31,7 @@ have the pixel format matching the format in the file.
 
 ## API: al_is_image_addon_initialized
 
-Returns true if the image addon has been initialized, otherwise returns false.
+Returns true if the image addon is initialized, otherwise returns false.
 
 ## API: al_shutdown_image_addon