Review Firestore core source util files (#13385)

Author: MojtabaHs

Firestore/core/src/util/executor.h

@@ -84,7 +84,7 @@ class Executor {
   // object prevents any tasks from running that could observe a partially
   // destroyed object graph.
   //
-  // Requirements for implementors:
+  // Requirements for implementers:
   //   * Dispose implementations must be idempotent.
   //   * Dispose implementations must exclude concurrent execution of other
   //     methods.

Firestore/core/src/util/string_format.cc

@@ -25,7 +25,7 @@ static const char* kMissing = "<missing>";
 static const char* kInvalid = "<invalid>";
 
 // Disable asan for this function because of the way it manages stack
-// (nested closure) is flaged with stack underflow by clang on Ubuntu.
+// (nested closure) is flagged with stack underflow by clang on Ubuntu.
 #if defined(_MSC_VER)
 __declspec(no_sanitize_address) std::string StringFormatPieces(
 #else