06b storytext: fixed double 'of'
Hand-fix UtBS po catalogues for typo correction

Commit 629857f4486b07f2fd4f2096234f8df28f7dc00e requires an unsupported
pofix change because the relevant substring appears twice with different
overall string contents, and it's impossible to provide pofix with the
full context and expect it to work due to catalog line wrapping.
HTTTT S23: 'Who do we serve?' -> 'Whom do we serve?'
pofix: Add convertion for HttT S23 typo fix

From commit 8d385fea00f75338535f7f468500bec8b1aa4372.