* Clarify PDF conversion, languages and encodings
The parameter name `valid_languages` may be a bit miss-leading from
reading only the tutorials. Users may, incorrectly assume that it
enforces that the conversions only works for those languages, then it's
more of a check.
- Provided clarifications in the tutorials to highlight what
valid_languages does and that changing the encoding may give better
results for their language of choice
- Updated the command for `pdftotext` to the correct one
* Allow encodings for `convert_files_to_dicts`
- Set option of passing encoding to the converters. Trying even for some
Latin1 languages, the converter does not do it in a good way.
Potential issues is that the encoding defaults to None, which is default
for the other converters, but not for the PDFToTextConverter. Could add
a check and change the ending to Latin1 for pdf if set to None.
Was considering adding it to **kwargs, but since it may be a commonly
used feature to be documented, I added it as a keyword argument instead.
Would love to hear your input and feedback on in.
* Set back PDF default encoding
* Update documentation
* WIP: First version of preprocessing tutorial
* stride renamed overlap, ipynb and py files created
* rename split_stride in test
* Update preprocessor api documentation
* define order for markdown files
* define order of modules in api docs
* Add colab links
* Incorporate review feedback
Co-authored-by: PiffPaffM <markuspaff.mp@gmail.com>
