Add missing GB in RAM specs (#147)

Author: ahoneybun

src/models/galp6/README.md

@@ -28,7 +28,7 @@ The System76 Galago Pro is a laptop with the following specifications:
         - 1x HDMI 2.1
         - 1x DisplayPort 1.4 over USB-C
 - Memory
-    - Up to 64 (2x32GB) dual-channel DDR4 SO-DIMMs @ 3200 MHz
+    - Up to 64GB (2x32GB) dual-channel DDR4 SO-DIMMs @ 3200 MHz
 - Networking
     - Gigabit Ethernet
     - M.2 PCIe/CNVi WiFi/Bluetooth