[hackers] [libgrapheme] Add "check" target to .PHONY || Laslo Hunhold

[git]

commit 2eeb594ce923517d319161fd924b25737aa2c497
Author:     Laslo Hunhold <la...@hunhold.de>
AuthorDate: Mon Nov 21 12:34:22 2022 +0100
Commit:     Laslo Hunhold <d...@frign.de>
CommitDate: Wed Nov 2 19:56:32 2022 +0100

    Add "check" target to .PHONY
    
    Thanks to Tom Schwindl for noticing this!

diff --git a/Makefile b/Makefile
index 93e0ce3..a9b99f1 100644
--- a/Makefile
+++ b/Makefile
@@ -365,4 +365,4 @@ dist:
 format:
        clang-format -i grapheme.h $(BENCHMARK:=.c) benchmark/util.c 
benchmark/util.h $(GEN:=.c) gen/util.c gen/types.h gen/util.h $(SRC:=.c) 
src/util.h $(TEST:=.c) test/util.c test/util.h
 
-.PHONY: all benchmark test install uninstall clean clean-data dist format
+.PHONY: all benchmark check clean clean-data dist format install test uninstall