change default arch type

Author: JoeStech

content/learning-paths/servers-and-cloud-computing/migrate-ease/3_migrate_ease_run.md

@@ -65,7 +65,7 @@ Here's an explanation of each of the arguments passed to the scanner tool:
 
 `{result_file_name}`: The name of the exported results file (without the extension).
 
-`{arch}`: The architecture type; `aarch64` is the default.
+`{arch}`: The architecture type; `armv8-a` is the default.
 
 `{scan_path}`: The path to the code you want to scan.
 

content/learning-paths/servers-and-cloud-computing/migrate-ease/4_migrate_ease_analysis.md

@@ -15,7 +15,7 @@ Support for AArch64 was added in Protobuf version v3.5.0 (November 2017). To dem
 Use migrate-ease to scan protobuf v2.5.0 and output the results to a JSON file named `result.json`:
 
 ```bash
-python3 -m cpp --git-repo https://github.com/protocolbuffers/protobuf.git --branch v2.5.0 --output result.json --march aarch64 protobuf
+python3 -m cpp --git-repo https://github.com/protocolbuffers/protobuf.git --branch v2.5.0 --output result.json --march armv8-a protobuf
 ```
 
 The scan will generate a file called `result.json` in your current directory.