Re-word: it's timing per request, not per call to SNFE.match()

A single request can require multiple calls to the static network
filtering engine (SNFE). The reported timing is the result of
going through *all* the required calls to SNFE. In effect, a
single call to SNFE.match() is a fraction of the reported timing.

src/js/benchmarks.js

@@ -217,7 +217,7 @@ export async function benchmarkStaticNetFiltering(options = {}) {
 
     const output = [
         'Benchmarked static network filtering engine:',
-        `\tEvaluated ${matchCount} match calls in ${dur.toFixed(0)} ms`,
+        `\tEvaluated ${matchCount} requests in ${dur.toFixed(0)} ms`,
         `\tAverage: ${(dur / matchCount).toFixed(3)} ms per request`,
         `\tNot blocked: ${matchCount - blockCount - allowCount}`,
         `\tBlocked: ${blockCount}`,