fix whitespace in amkefile

Author: NlightNFotis

regression/goto-harness/Makefile

@@ -15,13 +15,13 @@ else
 endif
 
 test:
-    @echo "[DEBUG] chain.sh"
-    @cat chain.sh
+	@echo "[DEBUG] chain.sh"
+	@cat chain.sh
 	@../test.pl -e -p -c "../chain.sh $(GOTO_CC_EXE) $(GOTO_HARNESS_EXE) $(CBMC_EXE) $(is_windows)"
 
 tests.log: ../test.pl
-    @echo "[DEBUG] chain.sh"
-    @cat chain.sh
+	@echo "[DEBUG] chain.sh"
+	@cat chain.sh
 	@../test.pl -e -p -c "../chain.sh $(GOTO_CC_EXE) $(GOTO_HARNESS_EXE) $(CBMC_EXE) $(is_windows)"
 
 show: