remove superfluous inner parentheses in regex

Author: wysiwys

src/extract.ts

@@ -43,7 +43,7 @@ function extractCargoResult(config: Config, output: string): BenchmarkResult[] {
     const lines = output.split(/\r?\n/g);
     const ret = [];
 
-    const reExtract = /^test (.+)\s+\.\.\. bench:\s+([0-9,.]+) ([0-9A-Za-z_\u03BC]+\/\w+)( \(\+\/- ([0-9,.]+)\))?$/;
+    const reExtract = /^test (.+)\s+\.\.\. bench:\s+([0-9,.]+) ([0-9A-Za-z_\u03BC]+\/\w+)( \(\+\/- [0-9,.]+\))?$/;
     const reComma = /,/g;
 
     for (const line of lines) {