format code according to conventions [skip ci]

keyboards/tgr/910/keymaps/via/rules.mk

@@ -1,4 +1,4 @@
-VIA_ENABLE = yes
-LTO_ENABLE = yes
-
-EXTRAKEY_ENABLE = no  
+VIA_ENABLE = yes
+LTO_ENABLE = yes
+
+EXTRAKEY_ENABLE = no