Total insulin : Limit to 2 fraction digits instead 3

(cherry picked from commit 32c0acb269a86839dc078f7db50736ecc27cf03e)

FreeAPS/Sources/Modules/AutotuneConfig/View/AutotuneConfigRootView.swift

@@ -16,7 +16,7 @@ extension AutotuneConfig {
         private var rateFormatter: NumberFormatter {
             let formatter = NumberFormatter()
             formatter.numberStyle = .decimal
-            formatter.maximumFractionDigits = 3
+            formatter.maximumFractionDigits = 2
             return formatter
         }