l10n copy changes for book.ftl [no bug] (#9723)
l10n copy changes for book.ftl [no bug] (#9723)


MichaelKohler/bedrock,sylvestre/bedrock,sylvestre/bedrock,mozilla/bedrock,craigcook/bedrock,MichaelKohler/bedrock,flodolo/bedrock,craigcook/bedrock,MichaelKohler/bedrock,sylvestre/bedrock,craigcook/bedrock,alexgibson/bedrock,flodolo/bedrock,sylvestre/bedrock,alexgibson/bedrock,MichaelKohler/bedrock,flodolo/bedrock,mozilla/bedrock,pascalchevrel/bedrock,pascalchevrel/bedrock,pascalchevrel/bedrock,craigcook/bedrock,alexgibson/bedrock,alexgibson/bedrock,flodolo/bedrock,mozilla/bedrock,pascalchevrel/bedrock,mozilla/bedrock