Fix typo withing -> within (found by codespell)

[stweil]

Signed-off-by: Stefan Weil sw@weilnetz.de

[stweil]

More typos exists in these files which I did not fix because they might document the history or be from other projects:

modified:   PAGE-release/gts/pagecontent/2013-07-15/pagecontent.xsd
modified:   PAGE-release/gts/pagecontent/2016-07-15/pagecontent.xsd
modified:   PAGE-release/gts/pagecontent/2017-07-15/pagecontent.xsd
modified:   PAGE-release/gts/pagecontent/2018-07-15/pagecontent.xsd
modified:   PAGE-release/gts/pagecontent/2019-07-15/pagecontent.xsd
modified:   documentation/xs3p-1.1.3/CHANGES
modified:   documentation/xs3p-1.1.3/examples/XMLSchema.xsd
modified:   documentation/xs3p-master/CHANGES
modified:   documentation/xs3p-master/examples/XMLSchema.xsd
modified:   documentation/xs3p-master/xs3p.xsl
modified:   legacy/RelatedWork/ABBYY_character_encoding/fr_languages.xml
modified:   legacy/RelatedWork/ALTO/IMPACT_ALTOex_final.xsd
modified:   legacy/RelatedWork/ALTO/alto-2-1-DRAFT.xsd
modified:   legacy/RelatedWork/ALTO/alto-4-0.xsd
modified:   legacy/RelatedWork/ALTO/alto-v2.0.xsd
modified:   legacy/RelatedWork/ALTO/alto_1-1-041.xsd
modified:   legacy/RelatedWork/METS/METS_1_1.xsd
modified:   legacy/RelatedWork/METS/mets.xsd
modified:   legacy/RelatedWork/alto_extended/alto_1-1-041-haifa.xsd
modified:   legacy/RelatedWork/simpledc20021212.xsd

[chris1010010]

Thanks