Update parametric pulse documentation. (#7477)
Update parametric pulse documentation. (#7477)

* Update parametric pulse documentation.

* Fix doc build.

* Documentation fix.

* Remove note.

* Fix LaTeX

* Remove release note for docs-only change

* Correct minor error in gaussian square doc.

* Remove extraneous slashes

Co-authored-by: Jake Lishman <4506a86e64ee7f74713ab69aff49c78428b27754@ibm.com>
QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py