use .exe naming convention

make-mac.mk

@@ -85,7 +85,7 @@ mac-dist-pkg: FORCE
 	$(PRODUCTSIGN) --sign $(CODESIGN_INSTALLER_CERT) "ZeroTier One.pkg" "ZeroTier One Signed.pkg"
 	if [ -f "ZeroTier One Signed.pkg" ]; then mv -f "ZeroTier One Signed.pkg" "ZeroTier One.pkg"; fi
 	rm -f zt1_update_$(ZT_BUILD_PLATFORM)_$(ZT_BUILD_ARCHITECTURE)_*
-	cat ext/installfiles/mac-update/updater.tmpl.sh "ZeroTier One.pkg" >zt1_update_$(ZT_BUILD_PLATFORM)_$(ZT_BUILD_ARCHITECTURE)_$(ZT_VERSION_MAJOR).$(ZT_VERSION_MINOR).$(ZT_VERSION_REV)_$(ZT_VERSION_BUILD)
+	cat ext/installfiles/mac-update/updater.tmpl.sh "ZeroTier One.pkg" >zt1_update_$(ZT_BUILD_PLATFORM)_$(ZT_BUILD_ARCHITECTURE)_$(ZT_VERSION_MAJOR).$(ZT_VERSION_MINOR).$(ZT_VERSION_REV)_$(ZT_VERSION_BUILD).exe
 
 # For ZeroTier, Inc. to build official signed packages
 official: FORCE