Update README migration guide (#1161)

* wording

* fix typo

README.md

@@ -22,16 +22,16 @@ systems and simulators.
 
 All the functionality that `qiskit-ibmq-provider` provides has been migrated to other packages:
 
-| Formerly | Current package | Details | Migration Guide | 
+| Formerly | Current package | Details | Migration Guide |
 | :---: | :---: | :---: | :---: |
 | [`qiskit.providers.ibmq.experiment`](https://qiskit.org/documentation/apidoc/ibmq_experiment.html) | [`qiskit-ibm-experiment`](https://pypi.org/project/qiskit-ibm-experiment/)<br>([docs](https://qiskit.org/documentation/experiments/)) |  For the features related with the IBM Quantum experiment database service. | [guide](https://github.com/Qiskit/qiskit-ibm-experiment/blob/main/docs/tutorials/Migration%20Guide.ipynb) |
-| [`qiskit.providers.ibmq.runtime`](https://qiskit.org/documentation/apidoc/ibmq_runtime.html) | [`qiskit-ibm-runtime`](https://pypi.org/project/qiskit-ibm-runtime/)<br>([docs](https://qiskit.org/documentation/partners/qiskit_ibm_runtime/)) | For features related with IBM Client for Qiskit Runtime | [guide](https://qiskit.org/documentation/partners/qiskit_ibm_runtime/migrate_from_ibmq.html) |
-| Rest of [`qiskit.providers.ibmq`](https://qiskit.org/documentation/apidoc/ibmq_provider.html) | [`qiskit-ibm-provider`](https://pypi.org/project/qiskit-ibm-provider)<br>([docs](https://qiskit.org/documentation/partners/qiskit_ibm_provider/)) | For access to IBM Quantum compute resources (aka backends) | [guide](https://qiskit.org/documentation/partners/qiskit_ibm_provider/tutorials/Migration_Guide_from_qiskit-ibmq-provider.html) |
+| [`qiskit.providers.ibmq.runtime`](https://qiskit.org/documentation/apidoc/ibmq_runtime.html) | [`qiskit-ibm-runtime`](https://pypi.org/project/qiskit-ibm-runtime/)<br>([docs](https://qiskit.org/documentation/partners/qiskit_ibm_runtime/)) | Use this package if you prefer getting high quality probability distribution or expectation values without having to optimize the circuits or mitigate results yourself. | [guide](https://qiskit.org/documentation/partners/qiskit_ibm_runtime/migrate_from_ibmq.html) |
+| Rest of [`qiskit.providers.ibmq`](https://qiskit.org/documentation/apidoc/ibmq_provider.html) | [`qiskit-ibm-provider`](https://pypi.org/project/qiskit-ibm-provider)<br>([docs](https://qiskit.org/documentation/partners/qiskit_ibm_provider/)) | Use this package if you need direct access to the backends to do experiments like device characterization. | [guide](https://qiskit.org/documentation/partners/qiskit_ibm_provider/tutorials/Migration_Guide_from_qiskit-ibmq-provider.html) |
 
 
 These packages can be installed by themselves (via the standard pip install command, e.g. ``pip install qiskit-ibm-provider``) and are not part of the Qiskit metapackage.
 
-  
+
 ## Installation
 
 We encourage installing Qiskit via the PIP tool (a python package manager),