Fix customSSLCert documentation error (#10155)

Should be Sim only, not Sim/Emu

docs/en/writing-running-appium/caps.md

@@ -137,7 +137,7 @@ Driver](/docs/en/drivers/ios-uiautomation.md).
 |`waitForAppScript`| The ios automation script used to determined if the app has been launched, by default the system wait for the page source not to be empty. The result must be a boolean |e.g. `true;`, `target.elements().length > 0;`, `$.delay(5000); true;` |
 |`webviewConnectRetries`| Number of times to send connection message to remote debugger, to get webview. Default: `8` |e.g., `12`|
 |`appName`| The display name of the application under test. Used to automate backgrounding the app in iOS 9+.|e.g., `UICatalog`|
-|`customSSLCert`|(Sim/Emu-only) Add an SSL certificate to simulator. | e.g. <br/>`-----BEGIN CERTIFICATE-----MIIFWjCCBEKg...`<br/>`-----END CERTIFICATE-----`|
+|`customSSLCert`|(Sim only) Add an SSL certificate to IOS Simulator. | e.g. <br/>`-----BEGIN CERTIFICATE-----MIIFWjCCBEKg...`<br/>`-----END CERTIFICATE-----`|
 |`webkitResponseTimeout`|(Real device only) Set the time, in ms, to wait for a response from WebKit in a Safari session. Defaults to `5000`|e.g., `10000`|
 
 ### iOS Only, using XCUITest