Update 5_using_the_transpiler.ipynb

Small typo modifey->modify

Author: ozlemsalehi

qiskit/fundamentals/5_using_the_transpiler.ipynb

@@ -164,7 +164,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In what follows we highlight the key steps in this workflow, and show how they modifey circuits based on the value of keyword arguments passed to the `transpile` function.  The `transpile` function has many input arguments:\n"
+    "In what follows we highlight the key steps in this workflow, and show how they modify circuits based on the value of keyword arguments passed to the `transpile` function.  The `transpile` function has many input arguments:\n"
    ]
   },
   {