test: switch order of strictEqual arguments

PR-URL: #24185
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

test/parallel/test-fs-read-file-sync.js

@@ -29,6 +29,6 @@ const fn = fixtures.path('elipses.txt');
 
 const s = fs.readFileSync(fn, 'utf8');
 for (let i = 0; i < s.length; i++) {
-  assert.strictEqual('\u2026', s[i]);
+  assert.strictEqual(s[i], '\u2026');
 }
-assert.strictEqual(10000, s.length);
+assert.strictEqual(s.length, 10000);