lang: lua-libmodbus: Update URL

Github organization changed names.  Proactively update URL, even though
github redirects.

Signed-off-by: Karl Palsson <karlp@etactica.com>

lang/lua-libmodbus/Makefile

@@ -6,7 +6,7 @@ PKG_RELEASE:=1
 
 PKG_SOURCE:=lua-libmodbus-$(PKG_VERSION).tar.gz
 PKG_SOURCE_SUBDIR:=lua-libmodbus-$(PKG_VERSION)
-PKG_SOURCE_URL:=https://codeload.github.com/remakeelectric/lua-libmodbus/tar.gz/v$(PKG_VERSION)?
+PKG_SOURCE_URL:=https://codeload.github.com/etactica/lua-libmodbus/tar.gz/v$(PKG_VERSION)?
 PKG_HASH:=90aff3a2cfe7f91f167ad4ea00f55c2aa86cf2aef93d022e3b2cf906a1791254
 PKG_SOURCE_VERSION:=v$(PKG_VERSION)