Fix casing in textinput import path in package.json

Author: PankajKumardev

packages/ui/package.json

@@ -9,7 +9,7 @@
     "./appbar": "./src/Appbar.tsx",
     "./center": "./src/Center.tsx",
     "./select": "./src/Select.tsx",
-    "./textinput": "./src/TextInput.tsx",
+    "./textinput": "./src/Textinput.tsx",
     "./footer" : "./src/Footer.tsx"
   },
   "scripts": {