Fix doc mentioning encodeToBuilder (fixes #612)

[ci skip]

Author: lspitzner

Data/Aeson/Text.hs

@@ -46,8 +46,8 @@ encodeToLazyText = LT.decodeUtf8 . encodingToLazyByteString . toEncoding
 -- embedded efficiently in a text-based protocol.
 --
 -- If you are going to immediately encode straight to a
--- 'L.ByteString', it is more efficient to use 'encodeToBuilder'
--- instead.
+-- 'L.ByteString', it is more efficient to use 'encode' (lazy ByteString)
+-- or @'fromEncoding' . 'toEncoding'@ (ByteString.Builder) instead.
 --
 -- /Note:/ Uses 'toJSON'
 encodeToTextBuilder :: ToJSON a => a -> Builder