SEED-0115: Fix link

Change-Id: I990f52f278602b6af2d7275e6c30634906b54d2e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/177093
Reviewed-by: Kayce Basques <kayce@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Pigweed-Auto-Submit: Alexei Frolov <frolv@google.com>

seed/0000-index.rst

@@ -24,4 +24,4 @@ All pending, active, and resolved SEEDs are listed below.
   0112-async-poll
   0113: Modular Bazel C/C++ toolchain API <https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/173453>
   0114: Channels <http://pigweed-review.googlesource.com/c/pigweed/pigweed/+/175471>
-  0115: pw_sensor Sensors <http://pigweed-review.googlesource.com/c/pigweed/pigweed/+/175479>
+  0115: pw_sensor Sensors <http://pigweed-review.googlesource.com/c/pigweed/pigweed/+/176760>