Markdown lint (#58)

* markdown linter

* format markdown docs

* format exiting markdown docs

doc/bookstore-en.md

@@ -1,8 +1,8 @@
-English | [简体中文](bookstore.md)
-
 # Rapid development of microservices - multiple RPCs
 
-## 0. Why building microservices are so difficult?
+English | [简体中文](bookstore.md)
+
+## 0. Why building microservices are so difficult
 
 To build a well working microservice, we need lots of knowledges from different aspects.
 
@@ -25,7 +25,7 @@ As well, we always adhere to the idea that **prefer tools over conventions and d
 
 Let’s take the shorturl microservice as a quick example to demonstrate how to quickly create microservices by using [go-zero](https://github.com/tal-tech/go-zero). After finishing this tutorial, you’ll find that it’s so easy to write microservices!
 
-## 1. What is a bookstore service?
+## 1. What is a bookstore service
 
 For simplicity, the bookstore service only contains two functionalities, adding books and quering prices.
 
@@ -71,7 +71,7 @@ And now, let’s walk through the complete flow of quickly create a microservice
 
 * use goctl to generate `api/bookstore.api`
 
-  ```
+  ```Plain Text
   goctl api -o bookstore.api
   ```
 
@@ -128,7 +128,7 @@ And now, let’s walk through the complete flow of quickly create a microservice
 
   the generated file structure looks like:
 
-  ```
+  ```Plain Text
   api
   ├── bookstore.api                  // api definition
   ├── bookstore.go                   // main entrance
@@ -188,13 +188,13 @@ And now, let’s walk through the complete flow of quickly create a microservice
 * under directory `rpc/add` create `add.proto` file
 
   ```shell
-goctl rpc template -o add.proto
+  goctl rpc template -o add.proto
   ```
   
   edit the file and make the code looks like:
 
   ```protobuf
-syntax = "proto3";
+  syntax = "proto3";
   
   package add;
   
@@ -220,7 +220,7 @@ syntax = "proto3";
 
   the generated file structure looks like:
 
-  ```
+  ```Plain Text
   rpc/add
   ├── add.go                      // rpc main entrance
   ├── add.proto                   // rpc definition
@@ -242,7 +242,6 @@ syntax = "proto3";
   └── pb
       └── add.pb.go
   ```
-  
 
 just run it, looks like:
 
@@ -258,13 +257,13 @@ you can change the listening port in file `etc/add.yaml`.
 * under directory `rpc/check` create `check.proto` file
 
   ```shell
-goctl rpc template -o check.proto
+  goctl rpc template -o check.proto
   ```
   
   edit the file and make the code looks like:
 
   ```protobuf
-syntax = "proto3";
+  syntax = "proto3";
   
   package check;
   
@@ -290,7 +289,7 @@ syntax = "proto3";
 
   the generated file structure looks like:
 
-  ```
+  ```Plain Text
   rpc/check
   ├── check.go                    // rpc main entrance
   ├── check.proto                 // rpc definition
@@ -315,7 +314,7 @@ syntax = "proto3";
 
   you can change the listening port in `etc/check.yaml`.
 
-  we need to change the port in `etc/check.yaml` to `8081`, because `8080 ` is used by `add` service.
+  we need to change the port in `etc/check.yaml` to `8081`, because `8080` is used by `add` service.
 
   just run it, looks like:
   
@@ -444,7 +443,7 @@ Till now, we’ve done the modification of API Gateway. All the manually added c
   source book.sql;
   ```
 
-* under the directory `rpc/model execute the following command to genrate CRUD+cache code, `-c` means using `redis cache`
+* under the directory `rpc/model` execute the following command to genrate CRUD+cache code, `-c` means using `redis cache`
 
   ```shell
   goctl model mysql ddl -c -src book.sql -dir .
@@ -454,7 +453,7 @@ Till now, we’ve done the modification of API Gateway. All the manually added c
 
   the generated file structure looks like:
 
-  ```
+  ```Plain Text
   rpc/model
   ├── bookstore.sql
   ├── bookstoremodel.go     // CRUD+cache code
@@ -614,4 +613,4 @@ We not only keep the framework simple, but also encapsulate the complexity into
 
 For the generated code by goctl, lots of microservice components are included, like concurrency control, adaptive circuit breaker, adaptive load shedding, auto cache control etc. And it’s easy to deal with the busy sites.
 
-If you have any ideas that can help us to improve the productivity, tell me any time! 👏
+If you have any ideas that can help us to improve the productivity, tell me any time! 👏