Fix syntax highlighting for go files

scm-ui/ui-components/src/SyntaxHighlighter.tsx

@@ -24,6 +24,7 @@
 import React from "react";
 
 import { PrismAsyncLight as ReactSyntaxHighlighter } from "react-syntax-highlighter";
+import { defaultLanguage, determineLanguage } from "./languages";
 // eslint-disable-next-line no-restricted-imports
 import highlightingTheme from "./syntax-highlighting";
 
@@ -33,27 +34,20 @@ type Props = {
   showLineNumbers?: boolean;
 };
 
-const defaultLanguage = "text";
-
 class SyntaxHighlighter extends React.Component<Props> {
   static defaultProps: Partial<Props> = {
     language: defaultLanguage,
     showLineNumbers: true
   };
 
-  getLanguage = () => {
-    const { language } = this.props;
-    if (language) {
-      return language;
-    }
-    return defaultLanguage;
-  };
-
   render() {
-    const { showLineNumbers } = this.props;
-    const language = this.getLanguage();
+    const { showLineNumbers, language } = this.props;
     return (
-      <ReactSyntaxHighlighter showLineNumbers={showLineNumbers} language={language} style={highlightingTheme}>
+      <ReactSyntaxHighlighter
+        showLineNumbers={showLineNumbers}
+        language={determineLanguage(language)}
+        style={highlightingTheme}
+      >
         {this.props.value}
       </ReactSyntaxHighlighter>
     );