added doc for removeDefaultHeaders (#52)

docs/.vitepress/config.ts

@@ -180,6 +180,7 @@ const api_sidebar = [
       { text: 'setRequestDefaultRetryCount', link: '/api/settings/setRequestDefaultRetryCount', },
       { text: 'setRequestDefaultRetryDelay', link: '/api/settings/setRequestDefaultRetryDelay', },
       { text: 'setDataDirectory', link: '/api/settings/setDataDirectory', },    
+      { text: 'removeDefaultHeaders', link: '/api/settings/removeDefaultHeaders', },
     ]
   },
   {

docs/api/settings/removeDefaultHeaders.md

@@ -0,0 +1,46 @@
+# removeDefaultHeaders
+
+use to remove default headers for all the requests.
+
+## Syntax
+
+```js
+removeDefaultHeaders()
+removeDefaultHeaders(key)
+```
+
+## Usage
+
+### ✅  Correct Usage
+
+```js
+// without specifying any 'key' will remove all the default headers
+request.removeDefaultHeaders()
+```
+
+```js
+// by specifying 'key' will remove only the specific default header
+request.removeDefaultHeaders('Authorization')
+```
+
+## Arguments
+
+#### > key (string)
+
+header key
+
+
+## Examples
+
+### Normal
+
+```js
+const { spec, request } = require('pactum');
+
+request.setDefaultHeaders({ 'key': 'value', 'key1': 'value1' });
+request.removeDefaultHeaders('key');
+
+await spec()
+  .get('https://randomuser.me/api')
+  .expectStatus(200);
+```