docs: new parameter name for the bazel remote cache (envoyproxy#22170)

The bazel parameter '--remote_http_cache' has been renamed to
'--remote_cache'. Use the new name.

Signed-off-by: Michael Kaufmann <michael.kaufmann@ergon.ch>

bazel/README.md

@@ -1009,5 +1009,5 @@ slower cache performance on macOS due to slow disk performance on Docker for Mac
 Adding the following parameter to Bazel everytime or persist them in `.bazelrc`.
 
 ```
---remote_http_cache=http://127.0.0.1:28080/
+--remote_cache=http://127.0.0.1:28080/
 ```

ci/README.md

@@ -104,11 +104,11 @@ For a debug version of the Envoy binary you can run:
 The build artifact can be found in `/tmp/envoy-docker-build/envoy/source/exe/envoy-debug` (or wherever
 `$ENVOY_DOCKER_BUILD_DIR` points).
 
-To leverage a [bazel remote cache](https://github.com/envoyproxy/envoy/tree/main/bazel#advanced-caching-setup) add the http_remote_cache endpoint to
+To leverage a [bazel remote cache](https://github.com/envoyproxy/envoy/tree/main/bazel#advanced-caching-setup) add the remote cache endpoint to
 the BAZEL_BUILD_EXTRA_OPTIONS environment variable
 
 ```bash
-./ci/run_envoy_docker.sh "BAZEL_BUILD_EXTRA_OPTIONS='--remote_http_cache=http://127.0.0.1:28080' ./ci/do_ci.sh bazel.release"
+./ci/run_envoy_docker.sh "BAZEL_BUILD_EXTRA_OPTIONS='--remote_cache=http://127.0.0.1:28080' ./ci/do_ci.sh bazel.release"
 ```
 
 The `./ci/run_envoy_docker.sh './ci/do_ci.sh <TARGET>'` targets are: