website: Fixed typo in learning gem5 part 1

Change-Id: Ib650d8bdc2029b6d5b3122ffeea79623075b77f2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/47841
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: Jason Lowe-Power <power.jg@gmail.com>
diff --git a/_pages/documentation/learning_gem5/part1/part1_2_simple_config.md b/_pages/documentation/learning_gem5/part1/part1_2_simple_config.md
index a8b495d..53fa0c7 100644
--- a/_pages/documentation/learning_gem5/part1/part1_2_simple_config.md
+++ b/_pages/documentation/learning_gem5/part1/part1_2_simple_config.md
@@ -221,7 +221,7 @@
 system.mem_ctrl = MemCtrl()
 system.mem_ctrl.dram = DDR3_1600_8x8()
 system.mem_ctrl.dram.range = system.mem_ranges[0]
-system.mem_ctrl.dram.port = system.membus.mem_side_ports
+system.mem_ctrl.port = system.membus.mem_side_ports
 ```
 
 After those final connections, we've finished instantiating our