build: fix checksum generation for TWRP

TWRP only accepts .md5 checksums, not .md5sum

Change-Id: I06bef5bc74233e76a86c03754d4c2bb71d9c22b2
diff --git a/build/tasks/blissify.mk b/build/tasks/blissify.mk
index 179ac62..39ed3ed 100644
--- a/build/tasks/blissify.mk
+++ b/build/tasks/blissify.mk
@@ -18,7 +18,7 @@
 .PHONY: blissify
 blissify: $(INTERNAL_OTA_PACKAGE_TARGET)
 	$(hide) ln -f $(INTERNAL_OTA_PACKAGE_TARGET) $(BLISS_TARGET_PACKAGE)
-	$(hide) $(MD5SUM) $(BLISS_TARGET_PACKAGE) > $(BLISS_TARGET_PACKAGE).md5sum
+	$(hide) $(MD5SUM) $(BLISS_TARGET_PACKAGE) > $(BLISS_TARGET_PACKAGE).md5
 	@echo -e ${CL_CYN}""${CL_CYN}
 	@echo -e ${CL_CYN}"      ___           ___                   ___           ___      "${CL_CYN}
 	@echo -e ${CL_CYN}"     /\  \         /\__\      ___        /\  \         /\  \     "${CL_CYN}
@@ -34,7 +34,7 @@
 	@echo -e ${CL_CYN}""${CL_CYN}
 	@echo -e ${CL_CYN}"===========-Bliss Package Complete-==========="${CL_RST}
 	@echo -e ${CL_CYN}"Zip: "${CL_MAG} $(BLISS_TARGET_PACKAGE)${CL_RST}
-	@echo -e ${CL_CYN}"MD5: "${CL_MAG}" `cat $(BLISS_TARGET_PACKAGE).md5sum | cut -d ' ' -f 1`"${CL_RST}
+	@echo -e ${CL_CYN}"MD5: "${CL_MAG}" `cat $(BLISS_TARGET_PACKAGE).md5 | cut -d ' ' -f 1`"${CL_RST}
 	@echo -e ${CL_CYN}"Size:"${CL_MAG}" `ls -lah $(BLISS_TARGET_PACKAGE) | cut -d ' ' -f 5`"${CL_RST}
 	@echo -e ${CL_CYN}"==============================================="${CL_RST}
 	@echo -e ${CL_CYN}"Have A Truly Blissful Experience"${CL_RST}