d/control: minimize pve-doc-generator depends

we don't actually need the whole dblatex/texlive dependency chain to
generate man pages.

this reduces the current dependency chain of pve-doc-generator in a
minimal chroot from 184 packages (556mb) to 72 packages (90mb):

-asciidoc-dblatex
-dblatex
-dirmngr
-docbook-dsssl
-docbook-utils
-fontconfig-config
-fonts-dejavu-core
-fonts-lmodern
-gnupg
-gnupg-agent
-jadetex
-libassuan0
-libavahi-client3
-libavahi-common-data
-libavahi-common3
-libbsd0
-libcairo2
-libcups2
-libcupsimage2
-libfontconfig1
-libfreetype6
-libglib2.0-0
-libgnutls30
-libgraphite2-3
-libgs9
-libgs9-common
-libgssapi-krb5-2
-libharfbuzz-icu0
-libharfbuzz0b
-libhogweed4
-libice6
-libidn11
-libijs-0.35
-libjbig0
-libjbig2dec0
-libjpeg62-turbo
-libk5crypto3
-libkeyutils1
-libkpathsea6
-libkrb5-3
-libkrb5support0
-libksba8
-liblcms2-2
-libldap-2.4-2
-libldap-common
-libnettle6
-libnpth0
-libnspr4
-libnss3
-libopenjp2-7
-libosp5
-libostyle1c2
-libp11-kit0
-libpaper-utils
-libpaper1
-libpixman-1-0
-libpng16-16
-libpoppler64
-libpotrace0
-libptexenc1
-libsasl2-2
-libsasl2-modules-db
-libsgmls-perl
-libsm6
-libsynctex1
-libtasn1-6
-libtexlua52
-libtexluajit2
-libtiff5
-libx11-6
-libx11-data
-libxau6
-libxaw7
-libxcb-render0
-libxcb-shm0
-libxcb1
-libxdmcp6
-libxext6
-libxi6
-libxmu6
-libxpm4
-libxrender1
-libxt6
-libzzip-0-13
-lynx
-lynx-common
-openjade
-opensp
-pinentry-curses
-poppler-data
-preview-latex-style
-python-apt
-python-apt-common
-sgmlspl
-t1utils
-tex-common
-texlive
-texlive-base
-texlive-bibtex-extra
-texlive-binaries
-texlive-extra-utils
-texlive-fonts-recommended
-texlive-generic-recommended
-texlive-htmlxml
-texlive-latex-base
-texlive-latex-extra
-texlive-latex-recommended
-texlive-pictures
-texlive-science
-ucf
-x11-common
-xdg-utils

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>

debian/control

@@ -17,7 +17,7 @@ Standards-Version: 3.8.4
 Package: pve-doc-generator
 Section: perl
 Architecture: any
-Depends: asciidoc-dblatex,
+Depends: asciidoc-base,
          libpve-common-perl,
          source-highlight,
          xmlto,