resources: Fixed typos in README.md

Change-Id: I1f353a9b189e79edd25f3c6fb54b58445555570c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-resources/+/30396
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/README.md b/README.md
index 990e2d0..f286c51 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,7 @@
 The toolchain may be installed via the apt-get package manager:
 
 ```
-sudo apt-get install git++-arm-linux-gnueabihf
+sudo apt-get install g++-arm-linux-gnueabihf
 ```
 
 ## GNU ARM-64 bit Toolchain
@@ -125,7 +125,7 @@
 The toolchain may be installved via the apt-get package manager:
 
 ```
-sudo apt-get install g++-aarch64-lunux-gnu
+sudo apt-get install g++-aarch64-linux-gnu
 ```
 
 # Resource: RISCV Tests