The Nilakantha Series converge more quickly comparing to the
Gregory-Leibniz Series.
Fixesgolang/go#53598.
Change-Id: I9f2bbdde403b302d652171a76dddc623d2291712
GitHub-Last-Rev: 81327fe84c
GitHub-Pull-Request: golang/website#165
Reviewed-on: https://go-review.googlesource.com/c/website/+/414826
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Galvin Gao <galvingaoper@gmail.com>