Simplify error trace

bridgetown-website/src/_docs/installation/upgrade.md

@@ -57,29 +57,11 @@ class RodaApp < Roda
 end
 ```
 
-Additionally, you may hit this issue with the server and the error will look something like this:
+Additionally, you may also hit the following error:
 
 ```
-➜  docs git:(konnorrogers/major-overhaul) ✗ bin/bridgetown start
-[Bridgetown]           Starting: Bridgetown v2.0.0.beta2 (codename "(TBD!)")
-[Bridgetown]
-[Bridgetown]    Booting Puma at: http://0.0.0.0:4000
-[Bridgetown]
-/Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/3.3.0/bundled_gems.rb:74:in `set_encoding': Interrupt
-        from /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/3.3.0/bundled_gems.rb:74:in `require'
-        [...]
-        from /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-core-2.0.0.beta2/bin/bridgetown:30:in `<top (required)>'
-        from bin/bridgetown:27:in `load'
-        from bin/bridgetown:27:in `<main>'
-[Bridgetown] Stopping auxiliary processes...
-[Bridgetown]   Exception raised: Errno::ENOENT
-[Bridgetown] No such file or directory @ rb_sysopen - /Users/konnor/projects/oss/doxxing-time-layouts/rhino-editor/docs/tmp/pids/aux.pid
-[Bridgetown]                  1: /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-foundation-2.0.0.beta2/lib/bridgetown/foundation/packages/pid_tracker.rb:15:in `readlines'
-[Bridgetown]                  2: /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-foundation-2.0.0.beta2/lib/bridgetown/foundation/packages/pid_tracker.rb:15:in `read_pidfile'
-[Bridgetown]                  3: /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-core-2.0.0.beta2/lib/bridgetown-core/utils/aux.rb:51:in `kill_processes'
-[Bridgetown]                  4: /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-core-2.0.0.beta2/lib/bridgetown-core/commands/start.rb:104:in `block (2 levels) in start'
-[Bridgetown]                  5: /Users/konnor/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/bridgetown-core-2.0.0.beta2/lib/bridgetown-core/commands/start.rb:11:in `ensure in start'
-[Bridgetown]          Backtrace: Use the --trace option for complete information.
+Exception raised: Errno::ENOENT
+No such file or directory @ rb_sysopen - /tmp/pids/aux.pid
 ```
 
 In which case, refer to the above fix for configuring your Roda server.