docs: update contracts bindings docs (#1269)

## Description

Closes: #XXXX

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This PR updates the docs of desmos-bindings part of `tools-to-build`,
the current one is for v1.0.0 which is outdated.

---

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- [ ] included the correct [type
prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json)
in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR
Targeting](https://github.com/desmos-labs/desmos/blob/master/CONTRIBUTING.md#pr-targeting))
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- [ ] followed the guidelines for [building
modules](https://docs.cosmos.network/v0.44/building-modules/intro.html)
- [ ] included the necessary unit and integration
[tests](https://github.com/desmos-labs/desmos/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go
code](https://blog.golang.org/godoc)
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in the PR title
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docs/docs/02-developers/03-tools-to-build.md

@@ -191,25 +191,26 @@ assertIsDeliverTxSuccess(result);
 
 ## Desmos Bindings
 The [Desmos Bindings](https://github.com/desmos-labs/desmos-bindings) are a set of packages that make possible to interact with the Desmos chain directly from smart contracts. With them, you can build your own dApp smart contracts taking full advantage of the Desmos chain modules to create even more personalisation to your app.   
-You can find the bindings generated documentation here: [Desmos Bindings docs](https://docs.rs/desmos-bindings/1.0.0/desmos_bindings/index.html). 
+You can find the bindings generated documentation here: [Desmos Bindings docs](https://docs.rs/desmos-bindings/latest/desmos_bindings/index.html). 
 
 ### Example 1: Post from a contract
 The below example shows you how to send a [`MsgCreatePost`](02-modules/posts/04-messages.md#msgcreatepost) from
 inside a smart contract.
 ```rust
-pub fn post_example_from_contract(deps: DepsMut, env: Env, info: MessageInfo, message: String) -> Result<Response<DesmosMsg>, ContractError> {
-    let post_msg = PostsMsg::CreatePost {
-        subspace_id: Uint64::new(1),
-        section_id: 1,
-        external_id: None,
-        text: Some(message),
-        entities: None,
-        attachments: None,
-        author: env.contract.address,
-        conversation_id: None,
-        reply_settings: ReplySetting::Unspecified,
+pub fn post_example_from_contract(deps: DepsMut, env: Env, info: MessageInfo, message: String) -> Result<Response<Empty>, ContractError> {
+    let post_msg = PostsMsg::create_post(
+        1,
+        1,
+        None,
+        "message",
+        None,
+        vec![],
+        vec![],
+        env.contract.address,
+        None,
+        ReplySetting::Unspecified,
         referenced_posts: vec![]
-    };
+    );
 
     let response = Response::new()
         .add_attribute("action", "post")
@@ -223,12 +224,9 @@ pub fn post_example_from_contract(deps: DepsMut, env: Env, info: MessageInfo, me
 ### Example 2: Query from a contract the Desmos chain state you need
 The below example shows you how to query a Subspace's posts from inside a smart contract.
 ```rust
-fn query_posts_from_contract(deps: Deps<DesmosQuery>, subspace_id: Uint64, pagination: Option<PageRequest>) -> StdResult<Binary> {
-    let request = DesmosQuery::Posts(PostsQuery::SubspacePosts {
-        subspace_id,
-        pagination,
-    });
-    let response: StdResult<QuerySubspacePostsResponse> = deps.querier.query(&request.into());
+fn query_posts_from_contract(deps: Deps, subspace_id: Uint64, pagination: Option<PageRequest>) -> StdResult<Binary> {
+    let querier = PostQuerier::new(&deps.querier);
+    let response: StdResult<QuerySubspacePostsResponse> = querier.query_subspace_posts(subspace_id, pagination);
 }
 ```