Fix license name in README.chromium for fft4g

(cherry picked from commit f844699005fefc6844bef184bcc101389951caa7)

Bug: chromium:414606466
Change-Id: I627dd5b01e157125c9811ec36086efd7e16855b1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/389920
Reviewed-by: Sam Zackrisson <[email protected]>
Reviewed-by: Henrik Lundin <[email protected]>
Commit-Queue: Sam Zackrisson <[email protected]>
Auto-Submit: Andrew Grieve <[email protected]>
Cr-Original-Commit-Position: refs/heads/main@{#44522}
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/391000
Commit-Queue: Henrik Lundin <[email protected]>
Bot-Commit: [email protected] <[email protected]>
Cr-Commit-Position: refs/branch-heads/7151@{#3}
Cr-Branched-From: dc428bd-refs/heads/main@{#44472}

Author: Andrew Grieve

common_audio/third_party/ooura/README.chromium

@@ -3,7 +3,7 @@ Short Name: fft4g
 URL: http://www.kurims.kyoto-u.ac.jp/~ooura/fft.html
 Version: N/A
 Date: 2018-06-19
-License: Custome license
+License: LicenseRef-takuya-ooura
 License File: LICENSE
 Security Critical: yes
 Shipped: yes