fix: set correct property

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
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    status: passed
  - task: lint_editorconfig
    status: passed
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    status: na
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    status: passed
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    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/plot/charts/base/ctor/lib/title/set.js

@@ -39,8 +39,8 @@ var Title = require( '@stdlib/plot/vega/title/ctor' );
 function set( value ) {
 	var tmp;
 	if ( isString( value ) ) {
-		tmp = new Title( this.config.title );
-		tmp.title = value;
+		tmp = new Title( this.config.title ); // clone the current title instance
+		tmp.text = value;
 		value = tmp;
 	} else if ( !( value instanceof Title ) ) {
 		value = new Title( value ); // note: this accounts for both vanilla objects and cross-realm instances