Commenting fixes

Author: dpbaines

vpr/src/base/vpr_types.h

@@ -1021,7 +1021,7 @@ enum e_routing_budgets_algorithm {
     MINIMAX,          // Use MINIMAX-PERT algorithm to allocate budgets
     YOYO,             // Use MINIMAX as above, and enable RCV algorithm to resolve negative hold slack
     SCALE_DELAY,
-    DISABLE
+    DISABLE           // Do not allocate budgets and run default router
 };
 
 enum class e_timing_report_detail {

vpr/src/route/route_path_manager.h

@@ -38,7 +38,7 @@ class RoutingContext;
  * This means nodes that already exist in the current path, or current route tree could be expanded twice.
  * This would result in electrically illegal loops (example below)
  * 
- * IPIN--|----|             |-----------Sink 1
+ * OPIN--|----|             |-----------Sink 1
  *       |    |--------X----|     <--- The branch intersects with a previous routing
  *       |             |
  *       |-------------|                              Sink 2