feat(docs): linguistic review

Author: paagkame

osi_lane.proto

@@ -375,7 +375,7 @@ message Lane
         //        
         enum Subtype
         {
-            // Lane of unknown subtype (must not be used in ground truth).
+            // Lane of unknown subtype. Do not use in ground truth.
             //
             SUBTYPE_UNKNOWN = 0;
 
@@ -388,28 +388,28 @@ message Lane
             // HighwayExit.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_NORMAL = 2;
 
-            // A lane which is designated for bicylists.
+            // A lane that is designated for bicylists.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_BIKING = 3;
 
-            // A lane which is designated for pedestrians (sidewalk).
+            // A lane that is designated for pedestrians (sidewalk).
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_SIDEWALK = 4;
 
             // A lane with parking spaces.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_PARKING = 5;
 
@@ -418,28 +418,28 @@ message Lane
             // HighwayExit.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_STOP = 6;
 
             // A lane on which cars should not drive.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_RESTRICTED = 7;
 
             // A hard border on the edge of a road.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_BORDER = 8;
 
             // A soft border on the edge of a road.
             //
             // Since it is not intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_NONDRIVING.
+            // driving, it should be used in combination with TYPE_NONDRIVING.
             //
             SUBTYPE_SHOULDER = 9;
 
@@ -448,35 +448,35 @@ message Lane
             // HighwayExit.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_EXIT = 10;
 
             // An acceleration lane in parallel to the main road.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_ENTRY = 11;
 
-            // A ramp leading to a motorway from rural or urban roads.
+            // A ramp from rural or urban roads joining a motorway.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_ONRAMP = 12;
 
-            // A ramp leading away from a motorway onto rural or urban roads.
+            // A ramp leading off a motorway onto rural or urban roads.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_OFFRAMP = 13;
 
             // A ramp that connect two motorways.
             //
             // Since it is intended to be used for normal automotive
-            // driving it should be used in combination with TYPE_DRIVING.
+            // driving, it should be used in combination with TYPE_DRIVING.
             //
             SUBTYPE_CONNECTINGRAMP = 14;
         }