Fix formatting

Author: doorgan

apps/engine/lib/engine/engine/build/isolation.ex

@@ -3,7 +3,7 @@ defmodule Engine.Build.Isolation do
   Runs functions in an isolated, monitored process
   """
 
-  @spec invoke((() -> term())) :: {:ok, term()} | {:error, term()}
+  @spec invoke((-> term())) :: {:ok, term()} | {:error, term()}
   def invoke(function) when is_function(function, 0) do
     me = self()
 

apps/engine/lib/engine/engine/progress.ex

@@ -5,7 +5,7 @@ defmodule Engine.Progress do
   @type message :: String.t()
 
   @type delta :: pos_integer()
-  @type on_complete_callback :: (() -> any())
+  @type on_complete_callback :: (-> any())
   @type report_progress_callback :: (delta(), message() -> any())
 
   defmacro __using__(_) do
@@ -14,7 +14,7 @@ defmodule Engine.Progress do
     end
   end
 
-  @spec with_progress(label(), (() -> any())) :: any()
+  @spec with_progress(label(), (-> any())) :: any()
   def with_progress(label, func) when is_function(func, 0) do
     on_complete = begin_progress(label)