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Co-authored-by: Aolin <[email protected]>
pingcap · Feb 7, 2024 · 2c32745 · 2c32745
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diff --git a/develop/dev-guide-sample-application-ruby-mysql2.md b/develop/dev-guide-sample-application-ruby-mysql2.md
@@ -99,15 +99,15 @@ Connect to your TiDB cluster depending on the TiDB deployment option you've sele
     cp .env.example .env
     ```
 
-6. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `<>` with connection parameters in the connection dialog:
+6. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `{}` with connection parameters in the connection dialog:
 
     ```dotenv
-   DATABASE_HOST={host}
-   DATABASE_PORT=4000
-   DATABASE_USER={user}
-   DATABASE_PASSWORD={password}
-   DATABASE_NAME=test
-   DATABASE_ENABLE_SSL=true
+    DATABASE_HOST={host}
+    DATABASE_PORT=4000
+    DATABASE_USER={user}
+    DATABASE_PASSWORD={password}
+    DATABASE_NAME=test
+    DATABASE_ENABLE_SSL=true
     ```
 
    > **Note**
@@ -133,7 +133,7 @@ Connect to your TiDB cluster depending on the TiDB deployment option you've sele
     cp .env.example .env
     ```
 
-5. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `<>` with connection parameters in the connection dialog:
+5. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `{}` with connection parameters in the connection dialog:
 
     ```dotenv
     DATABASE_HOST={host}
@@ -162,7 +162,7 @@ Connect to your TiDB cluster depending on the TiDB deployment option you've sele
     cp .env.example .env
     ```
 
-2. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `<>` with your own TiDB connection information:
+2. Edit the `.env` file, set up the environment variables as follows, and replace the corresponding placeholders `{}` with your own TiDB connection information:
 
     ```dotenv
     DATABASE_HOST={host}

diff --git a/develop/dev-guide-sample-application-ruby-rails.md b/develop/dev-guide-sample-application-ruby-rails.md
@@ -146,7 +146,7 @@ Connect to your TiDB cluster depending on the TiDB deployment option you've sele
     cp .env.example .env
     ```
 
-2. Edit the `.env` file, set up the `DATABASE_URL` environment variable as follows, and replace the `<user>`, `<password>`, `<host>`, `<port>`, and `<database>` with your own TiDB connection information:
+2. Edit the `.env` file, set up the `DATABASE_URL` environment variable as follows, and replace the `{user}`, `{password}`, `{host}`, `{port}`, and `{database}` with your own TiDB connection information:
 
     ```dotenv
     DATABASE_URL=mysql2://{user}:{password}@{host}:{port}/{database}