Fix typo in README.md

Author: vorburger

README.md

@@ -26,7 +26,7 @@ The formatter can act on whole files, on limited lines (`--lines`), on specific
 offsets (`--offset`), passing through to standard-out (default) or altered
 in-place (`--replace`).
 
-Option `--help` will print full usage details; incl. built-in documentation about
+Option `--help` will print full usage details; including built-in documentation about
 other flags, such as `--aosp`, `--fix-imports-only`, `--skip-sorting-imports`,
 `--skip-removing-unused-import`, `--skip-reflowing-long-strings`,
 `--skip-javadoc-formatting`, or the `--dry-run` and `--set-exit-if-changed`.