updated the comments

Author: aparnajyothi-y

dist/setup/index.js

@@ -96164,6 +96164,8 @@ function useCpythonVersion(version, architecture, updateEnvironment, checkLatest
             core.addPath(installDir);
             core.addPath(_binDir);
             if (utils_1.IS_WINDOWS) {
+                // Add --user directory
+                // `installDir` from tool cache should look like $RUNNER_TOOL_CACHE/Python/<semantic version>/x64/
                 // Extract version details
                 const version = path.basename(path.dirname(installDir));
                 const major = semver.major(version);

src/find-python.ts

@@ -152,6 +152,8 @@ export async function useCpythonVersion(
     core.addPath(_binDir);
 
     if (IS_WINDOWS) {
+      // Add --user directory
+      // `installDir` from tool cache should look like $RUNNER_TOOL_CACHE/Python/<semantic version>/x64/
       // Extract version details
       const version = path.basename(path.dirname(installDir));
       const major = semver.major(version);