README: clear up wording in FAQ entry

README.md

@@ -359,7 +359,7 @@ If things break or seem otherwise lackluster, **please** consult the
   <summary>Given that the glyph channel is initialized as transparent for a
   plane, shouldn't the foreground and background be initialized as transparent,
   also?</summary>
-  Probably (they are instead initialized to default opaque). This would change
+  Probably (they are instead by default initialized to opaque). This would change
   some of the most longstanding behavior of Notcurses, though,
   so it isn't happening.
 </details>

src/media/none.c

@@ -5,7 +5,7 @@
 
 static void
 printbanner(const notcurses* nc){
-  fprintf(nc->ttyfp, "built without multimedia support.\n");
+  fprintf(nc->ttyfp, "built without multimedia support\n");
 }
 
 const ncvisual_implementation local_visual_implementation = {