Detail explanation comment

Co-authored-by: Jonne Haß <[email protected]>

src/static_array.cr

@@ -65,7 +65,7 @@ struct StaticArray(T, N)
   def self.new(& : Int32 -> T)
     array = uninitialized self
     buf = array.to_unsafe
-    # Using a macro prevents slow compile times: https://github.com/crystal-lang/crystal/issues/2485
+    # Unroll the loop in Crystal land to avoid slow compile times in release mode. See https://github.com/crystal-lang/crystal/issues/2485#issuecomment-644416515
     {% for i in 0...N %}
     buf[{{i.id}}] = yield {{i.id}}
     {% end %}