ER diagram fails when column name starts with fk

[Lkopo]

Describe the bug
When column name in ER diagram starts with fk, mermaid takes it as a keyword instead which leads to syntax error.

To Reproduce
Use the following mermaid code:

erDiagram
        cool_table {
            int id_cool_table PK
            int fk_another_table
        }

Then you get the error:

Expecting 'ATTRIBUTE_WORD', got 'ATTRIBUTE_KEY'

Expected behavior
Rendered table with two columns id_cool_table and fk_another_table

Screenshots