Fix doc comments

src/backtracer/backtrace/frame/parser.cr

@@ -23,7 +23,7 @@ module Backtracer
         configuration: options[:configuration]?
     end
 
-    # Same as `parse` but raises `ArgumentError` on error.
+    # Same as `parse?` but raises `ArgumentError` on error.
     def parse(line : String, **options) : Backtrace::Frame
       parse?(line, **options) ||
         raise ArgumentError.new("Error parsing line: #{line.inspect}")

src/backtracer/configuration.cr

@@ -60,7 +60,7 @@ module Backtracer
 
     # Directories to be recognized as part of your app. e.g. if you
     # have an `engines` dir at the root of your project, you may want
-    # to set this to something like `/(src|engines)/`
+    # to set this to something like `/^(src|engines)\//`
     #
     # See `Frame#in_app?`
     property app_dirs_pattern = /^src\//