Fix typos across the codebase

[noojung]

This PR fixes several spelling errors across the codebase.

No public API is changed. The changes are intended to be behavior-neutral.

All tests (including system tests) passed locally using the following commands:

$ ./gradlew clean build
$ ./gradlew clean systemTest

Corrections by file

File	Before	After
JavaConventions.java	addDocumentaionVariant	addDocumentationVariant
Library.java	plaform	platform
InteractiveUpgradeResolverTests.java	libaryUpdateResolver	libraryUpdateResolver
CompiledMetadataReader.java	fom	from
TestcontainersStartup.java	is's	it's
ConfigDataEnvironmentPostProcessorIntegrationTests.java	missing-appplication.properties	missing-application.properties
InfoEndpointDocumentationTests.java	availabe	available
task-execution-and-scheduling.adoc	boostrap	bootstrap
grpc.adoc	auto-configre	auto-configure
ExtractCommand.java	Manfiest / manfiest	Manifest / manifest
NestedPath.java	filesSystem	fileSystem
ZipContent.java	loadeBuffer	loadedBuffer
NestedJarFileTests.java	mutli.zip	multi.zip
GrpcServerHealthSchedulerTests.java	registartion	registration
HibernateJpaAutoConfigurationTests.java	Bootstraping / Taks	Bootstrapping / Task
InetAddressFilter.java	spcified	specified
InternalInetAddressFilter.java	addess	address
JettyServletWebServerAutoConfigurationTests.java	Contex	Context
ConnectionFactoryUnwrapper.java	unwraped	unwrapped
OtlpMetricsPropertiesConfigAdapterTests.java	Namspace	Namespace
StartupTimeMetricsListenerAutoConfigurationTests.java	Gage	Gauge
JwtDecoderConfiguration.java	propery	property
ReactiveJwtDecoderConfiguration.java	propery	property
spring-boot-dependencies/build.gradle	thses	these

[wilkinsona]

Thank you, @noojung.