alpine: use template in module summary

alpine/Makefile

diff --git a/alpine/Makefile b/alpine/Makefile
index 075084d..7a1ee7d 100644
--- a/alpine/Makefile
+++ b/alpine/Makefile
@@ -211,8 +211,7 @@
 	post=`echo "$$MODULE_POST_$(call modname, $*)" | sed -e ':a' -e 'N' -e '$$!ba' -e "s/\n/\$$CR/g"` ; \
 	cat $(APKBUILD_TEMPLATE) | sed \
 		-e "s#%%MODULE%%#$${module_asis}#g" \
-		-e "s#%%SUMMARY%%#nginx $(MODULE_SUMMARY_$(call modname, $*))#g" \
-		-e "s#%%SHORT_SUMMARY%%#$(MODULE_SUMMARY_$(call modname, $*))#g" \
+		-e "s#%%SUMMARY%%#$(MODULE_SUMMARY_PREFIX) $(MODULE_SUMMARY_$(call modname, $*))#g" \
 		-e "s#%%BASE_VERSION%%#$(BASE_VERSION)#g" \
 		-e "s#%%BASE_RELEASE%%#$(BASE_RELEASE)#g" \
 		-e 's#%%BASE_CONFIGURE_ARGS%%#$(BASE_CONFIGURE_ARGS)#g' \