Fix some linter warnings.

examples/logger/main.go

@@ -9,6 +9,7 @@ import (
 // CustomLog is used in WithPublisherOptionsLogger to create a custom logger.
 type CustomLog struct{}
 
+// Printf is the only method needed in the Logger interface to function properly.
 func (c *CustomLog) Printf(fmt string, args ...interface{}) {
 	log.Printf("mylogger: "+fmt, args...)
 }

publish.go

@@ -101,7 +101,7 @@ func WithPublisherOptionsLogging(options *PublisherOptions) {
 	options.Logger = &stdlog{}
 }
 
-// WithPublisherOptionLogger sets logging to a custom interface.
+// WithPublisherOptionsLogger sets logging to a custom interface.
 // Use WithPublisherOptionsLogging to just log to stdout.
 func WithPublisherOptionsLogger(log Logger) func(options *PublisherOptions) {
 	return func(options *PublisherOptions) {