fix: correct miscelaneousFields typo in EncodingData

[rpatters1]

Human Summary

• Correct misspelling of field miscellaneousFields.
• Correct other typos found throughout repo.

Summary

Two commits. The first is the field rename; the second sweeps up the other misspellings a dictionary pass over the identifiers turned up.

EncodingData::miscelaneousFields -> miscellaneousFields

Missing an l. The class the vector holds, MiscellaneousField, was already spelled correctly, as are core::Miscellaneous, core::MiscellaneousField, and the <miscellaneous-field> element itself, so this member was the lone outlier. Eight occurrences in five files: the declaration and its MXAPI_EQUALS_MEMBER line, the reader and writer, and two test score-data builders.

Breaking: the member is public mx::api, so callers using the old spelling must rename. No compatibility alias is left behind, matching how the ScoreData layout -> defaults rename was handled in v0.5.0.

Other misspellings

Checking whether any sibling had the same problem meant spell-checking every identifier in the tree. It was the only misspelled public field name, but four other things turned up. None is breaking -- they are private mx::impl names and comment text.

TechnicalFunctions had the same word misspelled two different ways, while the class itself was spelled correctly: parseTechicalMark and its techicalChoice parameter dropped the n, and the constructor parameter inTechincalChoiceSet and member myTechincalChoiceSet transposed it. MeasureReader::isUserRequestedVoiceNumberConsistentAccrossAllVoices had a doubled c.

Comment fixes in public headers: alyways, convient, otherwords, and Clarient in the TransposeData doc table, which is rendered documentation. The table is column-aligned and Clarinet is the same width, so the alignment holds.

SoundID.h is deliberately untouched. brass.sackbutt and strings.violono.piccolo look wrong but mirror the MusicXML standard sound-id strings and have to match the wire format.

The rename in TechnicalFunctions.cpp lengthened a signature by one character, so make fmt reindented that function's continuation lines. That is the only non-rename change in the second commit.

Testing

• Full api suite passes (5961 assertions in 535 test cases)
• make api-roundtrip passes (364 of 364 pinned)
• make core-roundtrip-test passes (839 test cases)
• make fmt-check clean on touched files
• grep for every corrected spelling returns nothing outside core/generated

Renames only -- no behaviour change, so no new tests. The existing ApiK016aMisc and ApiLy43e suites already exercise the renamed EncodingData member on both the read and write paths, and the technical-mark and voice-number paths are covered by the api suite.

[webern]

Those were the good old days of slamming stuff out by hand!