migrate from ssh to https for gitmodules

.gitmodules

 [submodule "kicad-lib"]
 	path = kicad-lib
-	url = ssh://git@gitlab.scd31.com:97/stephen/kicad-lib.git
+	url = https://gitlab.scd31.com/stephen/kicad-lib.git
 [submodule "ministm32f4x"]
 	path = ministm32f4x
-	url = ssh://git@gitlab.scd31.com:97/stephen/ministm32f4x.git
+	url = https://gitlab.scd31.com/stephen/ministm32f4x.git