website: Fix several problems in Learning gem5 pages

- Update links to binaries in part1.6
- Fix page names in documentation.yml

Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Change-Id: Ie71f62ec848f1a4b67fe9a02e9e4cc1ab3b191df
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/44205
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/_data/documentation.yml b/_data/documentation.yml
index a090246..9ae3d00 100755
--- a/_data/documentation.yml
+++ b/_data/documentation.yml
@@ -217,10 +217,6 @@
           url: /documentation/learning_gem5/part1/example_configs
         - page: Extending gem5 for ARM
           url: /documentation/learning_gem5/part1/extending_configs
-        - page: ARM Power Modelling
-          url: /documentation/learning_gem5/part1/arm_power_modelling
-        - page: ARM DVFS Support
-          url: /documentation/learning_gem5/part1/arm_dvfs_support
 
     - title: Modifying/Extending
       id: part2
diff --git a/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md b/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md
index ae4117a..58019fe 100644
--- a/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md
+++ b/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md
@@ -1,6 +1,6 @@
 ---
 layout: documentation
-title: Extending gem5 to run ARM binaries
+title: Extending gem5 for ARM
 doc: Learning gem5
 parent: part1
 permalink: /documentation/learning_gem5/part1/extending_configs
@@ -22,8 +22,8 @@
 ```
 mkdir -p cpu_tests/benchmarks/bin/arm
 cd cpu_tests/benchmarks/bin/arm
-wget gem5.org/dist/current/gem5/cpu_tests/benchmarks/bin/arm/Bubblesort
-wget gem5.org/dist/current/gem5/cpu_tests/benchmarks/bin/arm/FloatMM
+wget dist.gem5.org/dist/current/gem5/cpu_tests/benchmarks/bin/arm/Bubblesort
+wget dist.gem5.org/dist/current/gem5/cpu_tests/benchmarks/bin/arm/FloatMM
 ```
 
 We'll use these to further test our ARM system.