Update README.md

[Fernando-Callec]

complex analysis

[waciumawanjohi]

Hi Fernando, I'm glad to see that you are interested in improving the OSSU Math curriculum.

Before changes are made to the curriculum, they must be discussed by contributors. We do this through Requests for Comments (RFCs) that should be opened as issues. OSSU’s curricular guidelines are here. Successful critiques of the curriculum will point out ways that OSSU is failing to uphold these guidelines. Examples are:

• OSSU lists a course as required when the course topics are elective in the curricular guide.
• OSSU not having a course to cover required topics from the curricular guide.
• OSSU lists multiple courses that cover the same topics when fewer courses could suffice.
• OSSU recommends a course to teach a topic, but there exists a higher quality course that covers the same material.

You can find examples of RFCs in the issues section of this curriculum and in the computer science curriculum.

Once you have written an RFC I would also encourage you to post in the discord Math channel to draw attention to your proposal.

Closing this pull request until there is a successful RFC.