chore(golang,python): update instructions to export env vars for database connection

Author: php-coder

README.md

@@ -55,7 +55,7 @@ Generates the endpoints (or a whole app) from a mapping (SQL query -> URL)
    | Language   | Commands to run the application |
    | -----------| --------------------------------|
    | JavaScript | <pre>$ npm install<br/>$ export DB_NAME=my-db DB_USER=my-user DB_PASSWORD=my-password<br/>$ npm start</pre> |
-   | Golang     | <pre>$ go run *.go</pre>or<pre>$ go build -o app<br/>$ ./app</pre> |
+   | Golang     | <pre>$ export DB_NAME=my-db DB_USER=my-user DB_PASSWORD=my-password<br/>$ go run *.go</pre>or<pre>$ go build -o app<br/>$ ./app</pre> |
    | Python     | <pre>$ pip install -r requirements.txt<br/>$ export DB_NAME=my-db DB_USER=my-user DB_PASSWORD=my-password<br/>$ uvicorn app:app</pre> |
 
    ---

src/cli.js

@@ -310,15 +310,18 @@ to install its dependencies and
 afteward to run`);
     } else if (lang === 'go') {
         console.info(`Use
+  export DB_NAME=db DB_USER=user DB_PASSWORD=secret
   go run *.go
 or
   go build -o app
+  export DB_NAME=db DB_USER=user DB_PASSWORD=secret
   ./app
 to build and run it`)
     } else if (lang === 'python') {
         console.info(`Use
   pip install -r requirements.txt
 to install its dependencies and
+  export DB_NAME=db DB_USER=user DB_PASSWORD=secret
   uvicorn app:app
 afteward to run`)
     }