uci: fix Makefile formatting

Fix wrong declaration for PKG_SROUCE_URL and PKG_VERSION variables and add missing colon

Signed-off-by: Oskari Rauta <[email protected]>

package/system/uci/Makefile

@@ -11,9 +11,9 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=uci
 PKG_RELEASE:=1
 
-PKG_SOURCE_URL=$(PROJECT_GIT)/project/uci.git
+PKG_SOURCE_URL:=$(PROJECT_GIT)/project/uci.git
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_DATE=2023-08-10
+PKG_SOURCE_DATE:=2023-08-10
 PKG_SOURCE_VERSION:=5781664d5087ccc4b5ab58505883231212dbedbc
 PKG_MIRROR_HASH:=2d60a8543fa00cfc75df6417354b004abf58f672c91bf0a3bffe3ea1dbf84a4b