improve ToC

README.md

@@ -4,14 +4,14 @@
 decentralised, and somewhat stripped-down alternative to [Ultimate
 Guitar](https://www.ultimate-guitar.com/).
 
-## But … why?
+# But … why?
 While the core functionality of UG is fantastic, I believe many of the
 features are completely unnecessary and only serve to clutter the UI. I
 also dislike the inundation of ads, paywalling of important features
 such as PDF export, and the implication that every single piece has a
 video tutorial you *could* access … if only you were a Pro user.
 
-## Ok, what features will it have?
+# Ok, what features will it have?
 I think the most basic features necessary for use are…
 - Basic tab formatting with
   [ChordPro](https://www.chordpro.org/chordpro/index.html) syntax
@@ -26,7 +26,7 @@ Nice-to-have features would include
 - Comments
   - Would require addition to moderation system
 
-## You mentioned "decentralisation". Whot?
+# You mentioned "decentralisation". Whot?
 My plan is to implement some sort of
 [ActivityPub](https://activitypub.rocks/) support, allowing users on one
 instance to discover tabs created by users on another instance and
@@ -43,7 +43,7 @@ grow and become a more viable alternative.
 
 That's the idea anyway.
 
-## Do you have a timeline?
+# Do you have a timeline?
 
 Nope!