Error in sizing calculator example

We received this bug report via email from Koichi in Japan:

We found sizing page has some mistakes.
http://docs.couchbase.com/admin/admin/Concepts/bp-sizingGuidelines.html

Please see attachment spreadsheet.
The main point is high water mark is calculated as 0.7 (but it is 0.85)
And total calculated is incorrect.

There are same mistakes
http://docs.couchbase.com/couchbase-manual-2.5/cb-admin/#sizing-guidelines
http://docs.couchbase.com/couchbase-manual-2.2/#sizing-guidelines
http://docs.couchbase.com/couchbase-manual-2.1/#sizing-guidelines
http://docs.couchbase.com/couchbase-manual-2.0/#sizing-guidelines
http://docs.couchbase.com/couchbase-manual-1.8/#sizing-guidelines