fix typos in cross-references -> ensure consistent naming

[gernotstarke]

oops - my analysis showed a fairly large number of typos within the "related qualities" yaml headers.

Inconsistent lower-uppercase, inconsistend singular/plural usage.

In the future, such issues shall be checked during the build/site-generation process

[gernotstarke]

Warning: Related quality 'Transparency' in 'Clarity' does not correspond to any defined quality.
Warning: Related quality 'Performance' in 'Efficiency' does not correspond to any defined quality.
Warning: Related quality 'Performance' in 'Scalability' does not correspond to any defined quality.
Warning: Related quality 'Performance' in 'Speed' does not correspond to any defined quality.
Warning: Related quality 'Performance' in 'Startup Time' does not correspond to any defined quality.
Warning: Related quality 'Performance' in 'Throughput' does not correspond to any defined quality.
Warning: Related quality 'Operational Constraints' in 'Operational And Environment Requirements' does not correspond to any defined quality.
Warning: Related quality 'Customizabilty' in 'Personalization' does not correspond to any defined quality.
Warning: Related quality 'Efficience' in 'Compliance' does not correspond to any defined quality.
Warning: Related quality 'Appropriateness' in 'Anticipated Workplace Environment' does not correspond to any defined quality.
Warning: Related quality 'Conherence' in 'Consistency' does not correspond to any defined quality.
Warning: Related quality 'Easy Of Use' in 'Convenience' does not correspond to any defined quality.
Warning: Related quality 'Integrability' in 'Portability' does not correspond to any defined quality.
Warning: Related quality 'Discoverability' in 'Composability' does not correspond to any defined quality.
Warning: Related quality 'Consistent' in 'Coherence' does not correspond to any defined quality.
Warning: Related quality 'Scalabiltiy' in 'Elasticity' does not correspond to any defined quality.
Warning: Related quality 'Conformity' in 'Operability' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Change Failure Rate' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Cycle Time' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Deployment Frequency' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Devops Metrics' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Lead Time For Changes' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Mean Time Between Failures' does not correspond to any defined quality.
Warning: Related quality 'Controllability' in 'Mean Time To Recovery' does not correspond to any defined quality.
Warning: Related quality 'Self Descritiveness' in 'Appearance' does not correspond to any defined quality.
Warning: Related quality 'User Error Robustness' in 'Operability' does not correspond to any defined quality.
Warning: Related quality 'User Error Robustness' in 'User Error Protection' does not correspond to any defined quality.
Warning: Related quality 'Useability' in 'Responsiveness' does not correspond to any defined quality.
Warning: Related quality 'Acceptance' in 'Credibility' does not correspond to any defined quality.
Warning: Related quality 'Attractiveness' in 'Appropriateness Recognizability' does not correspond to any defined quality.
Warning: Related quality 'Attractiveness' in 'Ease Of Use' does not correspond to any defined quality.
Warning: Related quality 'Attractiveness' in 'Inclusivity' does not correspond to any defined quality.
Warning: Related quality 'Attractiveness' in 'Interaction Capability' does not correspond to any defined quality.
Warning: Related quality 'Attractiveness' in 'Usability' does not correspond to any defined quality.
Warning: Related quality 'Controlability' in 'Operability' does not correspond to any defined quality.

[gernotstarke]

Warning: Related quality 'Acceptance' in 'Credibility' does not correspond to any defined quality.