"Cypher" vs "Cipher"

Book: How To Configure Server Security
Revision: n_2078801_how-to-configure-server-security_version_7.0.beta_edition_1.0_release_0-revision_7529393
Section: 2.2.6. HTTPS Listener Reference

Issue description:
In table 2.1. HTTPS Listener Settings is attribute "enabled-cipher-suites" with description "A list of cypher suit names that are allowed."
The usage of "c*pher" should be consistent. I would suggest to change "cypher" in the description to "cipher" (and both occurrences of "cypher" in section 2.2.5. Setting up an SSL/TLS for Application as well).

Suggestions for improvement:
Replace "cypher" with "cipher"

Note:
I'm not a native speaker, thus I can hardly decide which variant of c*pher should be used in the book. Anyway, it occurs to me that especially in attribute name and its description should be used the same word.
Feel free to close this issue and do nothing with documentation if you find my point irrelevant.