Fix spelling errors

Problem/Motivation

cspell reports, among other things,

./src/Controller/Services.php:77:35 - Unknown word (determin) -- the request format to determin how we're going to serialize
Suggestions: [determine, detrain, determent, deterring, determined]
./src/Plugin/Deriver/EntityView.php:27:55 - Unknown word (expirimental) -- that this EntityView is expirimental.
Suggestions: [experimental, experiment, excremental, experiments, experiential]
./src/ServiceDefinitionInterface.php:68:35 - Unknown word (Defintion) -- access for the ServiceDefintion.
Suggestions: [Definition, Defection, Deflation, Depiction, Detention]

Steps to reproduce

see https://git.drupalcode.org/project/services/-/jobs/1759213

Proposed resolution

fix spelling

Remaining tasks

make an MR