Fix: app is already a function, rename it to applicative'

Author: gusty

docsrc/content/abstraction-zipapplicative.fsx

@@ -127,7 +127,7 @@ let arr2 = (+) <!> [|1;2;3|] <.> [|10;20;30|]
 
 // Validations
 
-let validated = app2 {
+let validated = applicative2' {
     let! x = async { return Ok 1 }
     and! y = async { return Ok 2 }
     and! z = async { return Error ["Error"] }

src/FSharpPlus/Builders.fs

@@ -246,9 +246,9 @@ module GenericBuilders =
     let applicative3<'``Applicative1<Applicative2<Applicative3<'T>>>``> = ApplicativeBuilder3<'``Applicative1<Applicative2<Applicative3<'T>>>``> ()
 
     /// Creates a (non sequential) applicative computation expression.
-    let app<'``ZipApplicative<'T>``> = ZipApplicativeBuilder<'``ZipApplicative<'T>``> ()
+    let applicative'<'``ZipApplicative<'T>``> = ZipApplicativeBuilder<'``ZipApplicative<'T>``> ()
 
     /// Creates a (non sequential) applicative computation expression which compose effects of two Applicatives.
-    let app2<'``ZipApplicative1<ZipApplicative2<'T>>``> = ZipApplicativeBuilder2<'``ZipApplicative1<ZipApplicative2<'T>>``> ()
+    let applicative2'<'``ZipApplicative1<ZipApplicative2<'T>>``> = ZipApplicativeBuilder2<'``ZipApplicative1<ZipApplicative2<'T>>``> ()
 
 #endif

tests/FSharpPlus.Tests/Applicatives.fs

@@ -20,7 +20,7 @@ module Applicatives =
 
     [<Test>]
     let zipApply () =        
-        let arr1 = app2 {
+        let arr1 = applicative2' {
             let! x1 = async { return [|1; 2; 3|] }
             and! x2 = async { return [|10; 20; 30|] }
             and! x3 = async { return [|100; 200; 300|] }