docs: improve proto vesting docs about time attributes (#15474)

## Description

Added a little bit more comments to note about the meaning / type of the numeric time values.

When I'm creating the vesting accounts, I always have to  double check it, and end up looking at the code.

client/v2/internal/testpb/msg.proto

@@ -33,9 +33,9 @@ message MsgRequest {
   repeated bool                         bools      = 21;
   repeated uint32                       uints      = 22;
   repeated string                       strings    = 23;
-  repeated testpb.Enum                  enums      = 24;
-  repeated google.protobuf.Duration     durations      = 25;
-  repeated testpb.AMessage              some_messages  = 26;
+  repeated testpb.Enum enums                       = 24;
+  repeated google.protobuf.Duration durations      = 25;
+  repeated testpb.AMessage some_messages           = 26;
 
   int32    positional1                                  = 27;
   string   positional2                                  = 28;
@@ -46,8 +46,6 @@ message MsgRequest {
   bool   hidden_bool                = 32;
 }
 
-
 message MsgResponse {
   MsgRequest request = 1;
 }
-

orm/internal/testpb/bank.proto

@@ -14,31 +14,37 @@ message Module {
     go_import: "github.com/cosmos/orm/model/ormdb"
   };
   option (cosmos.orm.v1alpha1.module_schema) = {
-    schema_file: {
-      id: 1
-      proto_file_name: "testpb/bank.proto"
-    }
+    schema_file: {id: 1 proto_file_name: "testpb/bank.proto"}
   };
 }
 
 message Balance {
   option (cosmos.orm.v1.table) = {
     id: 1;
-    primary_key: {fields: "address,denom"}
-    index: {id: 1 fields: "denom"}
-  };
+primary_key: {
+fields:
+  "address,denom"
+}
+index: {
+id:
+  1 fields: "denom"
+}
+};
 
-  string address = 1;
-  string denom = 2;
-  uint64 amount = 3;
+string address = 1;
+string denom   = 2;
+uint64 amount  = 3;
 }
 
 message Supply {
   option (cosmos.orm.v1.table) = {
     id: 2;
-    primary_key: {fields: "denom"}
-  };
+primary_key: {
+fields:
+  "denom"
+}
+};
 
-  string denom = 1;
-  uint64 amount = 2;
+string denom  = 1;
+uint64 amount = 2;
 }

orm/internal/testpb/bank_query.proto

@@ -42,7 +42,7 @@ message ListBalanceRequest {
       // denom specifies the value of the Denom index key to use in the query.
       Denom denom = 2;
     }
-    
+
     message AddressDenom {
       // address is the value of the address field in the index.
       // It can be omitted to query for all valid values of that field in this segment of the index.
@@ -51,14 +51,14 @@ message ListBalanceRequest {
       // It can be omitted to query for all valid values of that field in this segment of the index.
       optional string denom = 2;
     }
-    
+
     message Denom {
       // denom is the value of the denom field in the index.
       // It can be omitted to query for all valid values of that field in this segment of the index.
       optional string denom = 1;
     }
   }
-  
+
   // query specifies the type of query - either a prefix or range query.
   oneof query {
     // prefix_query specifies the index key value to use for the prefix query.
@@ -68,7 +68,7 @@ message ListBalanceRequest {
   }
   // pagination specifies optional pagination parameters.
   cosmos.base.query.v1beta1.PageRequest pagination = 3;
-  
+
   // RangeQuery specifies the from/to index keys for a range query.
   message RangeQuery {
     // from is the index key to use for the start of the range query.
@@ -110,14 +110,14 @@ message ListSupplyRequest {
       // denom specifies the value of the Denom index key to use in the query.
       Denom denom = 1;
     }
-    
+
     message Denom {
       // denom is the value of the denom field in the index.
       // It can be omitted to query for all valid values of that field in this segment of the index.
       optional string denom = 1;
     }
   }
-  
+
   // query specifies the type of query - either a prefix or range query.
   oneof query {
     // prefix_query specifies the index key value to use for the prefix query.
@@ -127,7 +127,7 @@ message ListSupplyRequest {
   }
   // pagination specifies optional pagination parameters.
   cosmos.base.query.v1beta1.PageRequest pagination = 3;
-  
+
   // RangeQuery specifies the from/to index keys for a range query.
   message RangeQuery {
     // from is the index key to use for the start of the range query.
@@ -147,4 +147,3 @@ message ListSupplyResponse {
   // pagination is the pagination response.
   cosmos.base.query.v1beta1.PageResponse pagination = 2;
 }
-