add "Need Help" header

SETUP.md

@@ -17,25 +17,20 @@ Mastodon development requires the following:
 
 ### macOS
 
-First, make sure you have Homebrew installed. Follow the instructions at
-[brew.sh](https://brew.sh).
+First, make sure you have Homebrew installed. Follow the instructions at [brew.sh](https://brew.sh).
 
 Run the following to install all necessary packages:
 ```
 brew install ruby@3.0 foreman node yarn postgresql redis
 ```
 
-Ruby 3.0 is **keg-only** by default. Follow the instructions in the **Caveat**
-to add it to your path.
+Ruby 3.0 is **keg-only** by default. Follow the instructions in the **Caveat** to add it to your path.
 
 ### Linux
 
-We will assume that you know how to locate the correct packages for your distro.
-That said, some distros package `bundler` and `irb` separately. Make sure that
-you also install these.
+We will assume that you know how to locate the correct packages for your distro. That said, some distros package `bundler` and `irb` separately. Make sure that you also install these.
 
 On Arch, you will need:
-
 - `ruby`
 - `ruby-bundler`
 - `ruby-irb`
@@ -114,21 +109,17 @@ bundle exec rake db:setup
 ## Running Mastodon
 
 1. Run `export RAILS_ENV=development NODE_ENV=development`.
-    - Put these in your shell's .rc, or a script you can source if you want to \
-      skip this step in the future.
+    - Put these in your shell's .rc, or a script you can source if you want to skip this step in the future.
 2. Run `bundle exec rake assets:precompile`.
-    - If this explodes, complaining about `Hash`, you'll need to \
-      `export NODE_OPTIONS=--openssl-legacy-provider`.
-    - After doing this, you will need to run `bundle exec rake assets:clobber` \
-      and then re-run `bundle exec rake assets:precompile`.
+    - If this explodes, complaining about `Hash`, you'll need to `export NODE_OPTIONS=--openssl-legacy-provider`.
+    - After doing this, you will need to run `bundle exec rake assets:clobber` and then re-run `bundle exec rake assets:precompile`.
 3. Run `foreman start`
 
 # Updates/Troubleshooting
 
 ## RubyVM/DebugInspector Issues
 
-Still unable to fix. Circumvent by removing `better_errors` and
-`binding_of_caller` from Gemfile.
+Still unable to fix. Circumvent by removing `better_errors` and `binding_of_caller` from Gemfile.
 
 Happy to troubleshoot with someone better with Ruby than us >_<'/.
 
@@ -147,5 +138,6 @@ If this doesn't help, try:
 
 Then re-run `foreman start`. No. We have no idea why this worked.
 
-If the above instructions don't work, please contact @Rin here, or \
-@tammy@social.treehouse.systems.
+# Need Help?
+
+If the above instructions don't work, please contact @Rin here, or @tammy@social.treehouse.systems.