Ability to run text builder successfully

[SilverRainZ]

• Add fallback for all unsupported builder sphinx-notes/lilypond#20
• Add fallback for unsupported builder #20  sphinx-notes/strike#2

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make text returns:

...
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_0098.jpg
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_20210408_230947__01.jpg
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_20210408_231027__01.jpg
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_20210408_231154__01.jpg
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_20210408_231214__01.jpg
/Users/bytedance/Documents/bullet/notes/zxsys/way-to-artist/find-yourself.rst:: WARNING: image file not readable: notes/zxsys/way-to-artist/_any/_images/IMG_20210408_231237__01__01.jpg
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
Building prefix dict from the default dictionary ...
Dumping model to file cache /var/folders/x2/qx6m4lz12hq87zcf853whhx80000gp/T/jieba.cache
Loading model cost 0.674 seconds.
Prefix dict has been built successfully.
purging orphan document(s)... [100%] 404
dumping dirty document(s)... [100%] 404

Exception occurred:
  File "/Users/bytedance/Library/Python/3.9/lib/python/site-packages/sphinx/registry.py", line 347, in create_translator
    setattr(translator, 'visit_' + name, MethodType(visit, translator))
TypeError: first argument must be callable
The full traceback has been saved in /var/folders/x2/qx6m4lz12hq87zcf853whhx80000gp/T/sphinx-err-02_kka25.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
make: *** [text] Error 2