Display memory in bytes instead of MB for consistency

- Changed output to show bytes instead of MB
- Updated header to show 'Minne (bytes)'
- Better for comparing memory usage across all languages
- Memory data already collected in bytes from ps command

timelines/JavaScript/run_3.tsv

@@ -1,22 +1,7 @@
 9 2080768 0
-31 2080768 0
-53 2080768 0
-80 2080768 0
-105 2080768 0
-131 2080768 0
-154 2080768 0
-179 2080768 0
-203 2080768 0
-229 2080768 0
-255 2080768 0
-280 2080768 0
-305 2080768 0
-329 2080768 0
-357 2080768 0
-382 2080768 0
-404 2080768 0
-429 2080768 0
-454 2080768 0
-479 2080768 0
-503 2080768 0
-524 0 0
+21 2080768 0
+33 2080768 0
+45 2080768 0
+58 2080768 0
+74 2080768 0
+82 0 0