docs(configuration): fix wrong property name

languagesMask property is not recognized by SwaggerUI.
languages property is recognized propertly.

Refs #7505

Author: char0n

docs/usage/configuration.md

@@ -72,7 +72,7 @@ Parameter name | Docker variable | Description
 <a name="syntaxHighlight.activate"></a>`syntaxHighlight.activate` | _Unavailable_ | `Boolean=true`. Whether syntax highlighting should be activated or not.
 <a name="syntaxHighlight.theme"></a>`syntaxHighlight.theme` | _Unavailable_ | `String=["agate"*, "arta", "monokai", "nord", "obsidian", "tomorrow-night"]`. [Highlight.js](https://highlightjs.org/static/demo/) syntax coloring theme to use. (Only these 6 styles are available.)
 <a name="tryItOutEnabled"></a>`tryItOutEnabled` | `TRY_IT_OUT_ENABLED` | `Boolean=false`. Controls whether the "Try it out" section should be enabled by default.
-<a name="requestSnippets"></a>`requestSnippets` | _Unavailable_ | `Object`. This is the default configuration section for the the requestSnippets plugin.<br>requestSnippets: {<br>&nbsp;&nbsp;generators: {<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_bash": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (bash)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "bash"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_powershell": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (PowerShell)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "powershell"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_cmd": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (CMD)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "bash"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;},<br>&nbsp;&nbsp;defaultExpanded: true,<br>&nbsp;&nbsp;languagesMask: null, // e.g. only show curl bash = \["curl_bash"\]<br>},
+<a name="requestSnippets"></a>`requestSnippets` | _Unavailable_ | `Object`. This is the default configuration section for the the requestSnippets plugin.<br>requestSnippets: {<br>&nbsp;&nbsp;generators: {<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_bash": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (bash)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "bash"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_powershell": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (PowerShell)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "powershell"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;&nbsp;&nbsp;"curl_cmd": {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;title: "cURL (CMD)",<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;syntax: "bash"<br>&nbsp;&nbsp;&nbsp;&nbsp;},<br>&nbsp;&nbsp;},<br>&nbsp;&nbsp;defaultExpanded: true,<br>&nbsp;&nbsp;languages: null, // e.g. only show curl bash = \["curl_bash"\]<br>},
 
 
 ##### Network