Adopt consistent case for section headings

[emlun]

Of the 123 section headings, all except the following 37 currently use title case (some of these arguably do too: those where the only offending word is a trailing "method", 'enumeration" or "operation"). Shall we change these to title case?

• 1.1.3 New device registration
• 1.1.4 Other use cases and configurations
• 5.1.3 Create a new credential - PublicKeyCredential’s [[Create]](origin, options, sameOriginWithAncestors) method
• 5.1.4 Use an existing credential to make an assertion - PublicKeyCredential’s [Get] method
• 5.1.4.1 PublicKeyCredential’s [[DiscoverFromExternalSource]](origin, options, sameOriginWithAncestors) method
• 5.1.5 Store an existing credential - PublicKeyCredential’s [[Store]](credential, sameOriginWithAncestors) method
• 5.1.6 Preventing silent access to an existing credential - PublicKeyCredential’s [[preventSilentAccess]](credential, sameOriginWithAncestors) method
• 5.1.7 Availability of User-Verifying Platform Authenticator - PublicKeyCredential’s isUserVerifyingPlatformAuthenticatorAvailable() method
• 5.4.5 Authenticator Attachment enumeration (enum AuthenticatorAttachment)
• 5.4.6 Attestation Conveyance Preference enumeration (enum AttestationConveyancePreference)
• 5.6 Abort operations with AbortSignal
• 5.10.1 Client data used in WebAuthn signatures (dictionary CollectedClientData)
• 5.10.2 Credential Type enumeration (enum PublicKeyCredentialType)
• 5.10.4 Authenticator Transport enumeration (enum AuthenticatorTransport)
• 5.10.6 User Verification Requirement enumeration (enum UserVerificationRequirement)
• 6.1 Authenticator data
• 6.1.2 FIDO U2F signature format compatibility
• 6.2 Authenticator taxonomy
• 6.3 Authenticator operations
• 6.3.1 Lookup Credential Source by Credential ID algorithm
• 6.3.2 The authenticatorMakeCredential operation
• 6.3.3 The authenticatorGetAssertion operation
• 6.3.4 The authenticatorCancel operation
• 6.4.1 Attested credential data
• 6.4.1.1 Examples of credentialPublicKey Values encoded in COSE_Key format
• 7.1 Registering a new credential
• 7.2 Verifying an authentication assertion
• 8.2.1 Packed attestation statement certificate requirements
• 8.3.1 TPM attestation statement certificate requirements
• 9.2 Defining extensions
• 9.3 Extending request parameters
• 9.4 Client extension processing
• 9.5 Authenticator extension processing
• 14.1 De-anonymization prevention measures
• 14.2 Anonymous, scoped, non-correlatable public key credentials
• 14.3 Authenticator-local biometric recognition
• 14.7 Privacy between operating system accounts

[emlun]

(I personally prefer sentence case, but I have no strong opinion either way)

[selfissued]

Section headings are titles