Update Readme to warn about archiving (#1495)

We will archive as soon as we finish copying the tutorials over to
Qiskit.

Author: Eric-Arellano

README.md

@@ -2,11 +2,12 @@
 
 [![License](https://img.shields.io/github/license/Qiskit/qiskit-tutorials.svg?style=popout-square)](https://opensource.org/licenses/Apache-2.0)
 
-> :warning: **This repository will be soon archived**: The content in this repository [is being moved to other locations](https://github.com/Qiskit/qiskit-tutorials/issues/1473). If you have issues or PR, please submit them to their new location. 
+> :warning: **This repository is archived**: The content in this repository [was moved to other locations](https://github.com/Qiskit/qiskit-tutorials/issues/1473). If you have issues or PR, please submit them to their new location. 
 
 * `algorithms` folder -> [`qiskit-algorithms`](https://qiskit.org/ecosystem/algorithms/tutorials/index.html) ([GitHub](https://github.com/qiskit-community/qiskit-algorithms/tree/main/docs/tutorials))
-* `circuits` folder -> [Qiskit](https://qiskit.org/documentation/tutorials.html) ([GitHub](https://github.com/Qiskit/qiskit-terra/tree/main/docs/tutorials/circuits))
-* `circuits_advanced` folder -> [Qiskit](https://qiskit.org/documentation/tutorials.html) ([GitHub](https://github.com/Qiskit/qiskit-terra/tree/main/docs/tutorials/circuits_advanced))
+* `circuits` folder -> [Qiskit](https://qiskit.org/documentation/tutorials.html) ([GitHub](https://github.com/Qiskit/qiskit/tree/main/docs/tutorials/circuits))
+* `circuits_advanced` folder -> [Qiskit](https://qiskit.org/documentation/tutorials.html) ([GitHub](https://github.com/Qiskit/qiskit/tree/main/docs/tutorials/circuits_advanced))
+* `opflow` folder -> [Qiskit](https://qiskit.org/documentation/tutorials.html) ([GitHub](https://github.com/Qiskit/qiskit/tree/main/docs/tutorials/opflow))
 * `simulators` folder -> [`qiskit-aer`](https://qiskit.org/ecosystem/aer/tutorials/index.html) ([GitHub](https://github.com/qiskit/qiskit-aer/tree/main/docs/tutorials))
 * `textbook` folder -> removed in favor of https://www.qiskit.org/learn