added haskell append to file snippet

Author: ACR1209

snippets/haskell/file-handling/append-to-file.md

@@ -0,0 +1,19 @@
+---
+title: Append to File
+description: Appends text to an existing file.
+author: ACR1209
+tags: haskell,file,append,utilty
+---
+
+```hs
+import System.IO
+
+appendToFile :: FilePath -> String -> IO ()
+appendToFile = appendFile 
+
+main :: IO ()
+main = do
+    let file = "example.txt"
+    let text = "This will be appended to the file.\n"
+    appendToFile file text
+```