Fix typos

Change-Id: Ie0b3a41e4248fb831d76ac47417cd8cb3a1e23f9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2482823
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70596}

include/cppgc/internal/persistent-node.h

@@ -19,7 +19,7 @@ class Visitor;
 
 namespace internal {
 
-// PersistentNode represesents a variant of two states:
+// PersistentNode represents a variant of two states:
 // 1) traceable node with a back pointer to the Persistent object;
 // 2) freelist entry.
 class PersistentNode final {

src/heap/cppgc/marker.cc

@@ -124,7 +124,7 @@ MarkerBase::IncrementalMarkingTask::Post(cppgc::TaskRunner* runner,
                                          MarkerBase* marker) {
   // Incremental GC is possible only via the GCInvoker, so getting here
   // guarantees that either non-nestable tasks or conservative stack
-  // scannnig are supported. This is required so that the incremental
+  // scanning are supported. This is required so that the incremental
   // task can safely finalize GC if needed.
   DCHECK_IMPLIES(marker->heap().stack_support() !=
                      HeapBase::StackSupport::kSupportsConservativeStackScan,