fix(devins-lang): improve readability of SyntaxHighlighterFactory #101

The `DevInSyntaxHighlighterFactory` now returns the `DevInSyntaxHighlighter` directly, removing unnecessary parameters and improving code readability.

Author: phodal

exts/devins-lang/src/main/kotlin/cc/unitmesh/devti/language/highlight/DevInSyntaxHighlighterFactory.kt

@@ -1,12 +1,9 @@
 package cc.unitmesh.devti.language.highlight
 
-import com.intellij.openapi.fileTypes.SyntaxHighlighter
 import com.intellij.openapi.fileTypes.SyntaxHighlighterFactory
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.VirtualFile
 
 class DevInSyntaxHighlighterFactory : SyntaxHighlighterFactory() {
-    override fun getSyntaxHighlighter(project: Project?, virtualFile: VirtualFile?): SyntaxHighlighter {
-        return DevInSyntaxHighlighter()
-    }
+    override fun getSyntaxHighlighter(project: Project?, virtualFile: VirtualFile?) = DevInSyntaxHighlighter()
 }