Incorrect explanation and output for test case in T I Double Guh Er II in wiki and TIP102 course page

[jwinn19464]

Problem:
T-I-Double Guh-Er: That spells Tigger! Write a function tiggerfy() that accepts a string word and returns a new string that removes any substrings t, i, gg, and er from word. The function should be case insensitive.

The incorrect explanation in the wiki page, under the heading "U-nderstand"
"""
EDGE CASE
Input: Choir
Expected Output: Choir
Explanation: No specified substrings are present in Choir, so it remains unchanged.
"""
The correct output should be 'Chor' as the substring 'i' is present in the string and thus, should be removed. I also ran the solution code provided at the bottom of the page and the output was also 'Chor'.
The incorrect output is also shown in the TIP102 Advanced Problem Set Version 1 section in the Unit 1 Session 1 tab in courses.codepath.org.

Screenshots and links:
https://github.com/codepath/compsci_guides/wiki/T-I-Double-Guh-Er-II

From the TIP102 course page: