gnucash-docs: update to 4.13.

4.13  - 18 December 2022
        o Bug 798620 - Unable to build docs on Mageia Cauldron
        o Bug 798623 - ENG. Typo "documenation"
        o Bug 798624 - Document how to check if GnuCash is running when
                      updating quotes
        o Bug 798645 - screens instead of WINDOWS
        o Bug 798665 - New: ENG. Typo: Unnecessary determiner "a"
                      in 2.6.1. Migrating financial data.
        o Bug 798674 - Broken link on Chapter 17. Python Bindings
        o Manual:de: Account_Actions: Tippfehler-Korrektur
        o Review URLs and replace them by entities in all parts and languages excepting in comments or FDL appendix
        o manual, ch_Finance-Quote: fix broken entities
        o gnc-gui-struct.dtd: fix some mistakes and add entities for menuitems and menuchoice.
        o Update url-irc to "irc://irc.gimp.net/gnucash" see the email announcement
        o Partial Modernization of Manual:C:Business: Differentiation of admonitions and improvement of lists
        o Manual:C: Convert CSV assistant into <procedure>
        o Multi-split csv elaboration
        o Update app-fq-vers to "1.53"
        o Replace "Online Quote Setup" instructions in Guide by links to the manual chapter.
        O Enhance bookinfos by subtitle and titleabbrev;drop "Help" from manual. Adding titleabbrev allows yelp to display the version in its titlebar
        o Guide:C: Fix image declarations: Some were not properly scaled and others didn't appear in the List of Figures.
        o Replace all hardcoded width="510[px]" by "&img-w;" for for both components in all languages
        o Ensure our documentation is also found when gnucash is run in KDE
        o Restore draft status in gnc-docbook.dtd.
        o New and Updated Translations: German

(wiz)