Fix educators/qaoa_ising.ipynb as part of docs cleanup for Cirq 1.0 (#5204)
Fix educators/qaoa_ising.ipynb as part of docs cleanup for Cirq 1.0 (#5204)

* Moved cirq import to top
* Cleared output
* Fixed typos in text
quantumlib/Cirq,quantumlib/Cirq,quantumlib/Cirq,quantumlib/Cirq,quantumlib/Cirq