Address comments.

src/graph/planner/match/ArgumentFinder.h

@@ -10,7 +10,7 @@
 
 namespace nebula {
 namespace graph {
-// ArgumentFinder find if a pattern use a named alias that already declared
+// ArgumentFinder finds if a pattern use a named alias that already declared
 // in former patterns.
 class ArgumentFinder final : public StartVidFinder {
  public:

src/graph/planner/match/LabelIndexSeek.h

@@ -11,8 +11,7 @@
 namespace nebula {
 namespace graph {
 
-// The LabelIndexSeek was designed to find if could get the starting vids by tag
-// index.
+// The LabelIndexSeek finds if a plan could get the starting vids by tag index.
 class LabelIndexSeek final : public StartVidFinder {
  public:
   static std::unique_ptr<LabelIndexSeek> make() {

src/graph/planner/match/MatchPlanner.h

@@ -11,7 +11,7 @@
 
 namespace nebula {
 namespace graph {
-// MatchPlanner generate plans for Match statement based on AstContext.
+// MatchPlanner generates plans for Match statement based on AstContext.
 class MatchPlanner final : public Planner {
  public:
   static std::unique_ptr<MatchPlanner> make() {

src/graph/planner/match/OrderByClausePlanner.h

@@ -10,7 +10,7 @@
 
 namespace nebula {
 namespace graph {
-// The OrderByClausePlanner generate plan for order by clause;
+// The OrderByClausePlanner generates plan for order by clause;
 class OrderByClausePlanner final : public CypherClausePlanner {
  public:
   OrderByClausePlanner() = default;

src/graph/planner/match/PropIndexSeek.h

@@ -10,7 +10,7 @@
 
 namespace nebula {
 namespace graph {
-// The PropIndexSeek find if a plan could get starting vids by tag
+// The PropIndexSeek finds if a plan could get starting vids by tag
 // props or edge props index.
 class PropIndexSeek final : public StartVidFinder {
  public:

src/graph/planner/match/ReturnClausePlanner.h

@@ -10,7 +10,7 @@
 
 namespace nebula {
 namespace graph {
-// The ReturnClausePlanner generate plan for return clause.
+// The ReturnClausePlanner generates plan for return clause.
 class ReturnClausePlanner final : public CypherClausePlanner {
  public:
   ReturnClausePlanner() = default;

src/graph/planner/match/ScanSeek.h

@@ -11,8 +11,7 @@
 
 namespace nebula {
 namespace graph {
-// The ScanSeek find if a plan could get the starting vids in
-// filter.
+// The ScanSeek finds if a plan could get the starting vids in filter.
 class ScanSeek final : public StartVidFinder {
  public:
   static std::unique_ptr<ScanSeek> make() {

src/graph/planner/plan/Query.h

@@ -1611,7 +1611,7 @@ class BiLeftJoin final : public BiJoin {
   void cloneMembers(const BiLeftJoin&);
 };
 
-// Lnner join
+// Inner join
 class BiInnerJoin final : public BiJoin {
  public:
   static BiInnerJoin* make(QueryContext* qctx,