add incompatible_remap_main_repo to buildkite build flags

.bazelci/presubmit.yml

diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index bd50460..babf0fe 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -6,6 +6,8 @@
     bazel: latest
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -17,6 +19,8 @@
     bazel: latest
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -28,6 +32,8 @@
     bazel: latest
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -52,6 +58,8 @@
     bazel: last_green
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -63,6 +71,8 @@
     bazel: last_green
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -74,6 +84,8 @@
     bazel: last_green
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "..."
     test_flags:
@@ -85,6 +97,8 @@
     bazel: last_green
     build_targets:
     - "..."
+    build_flags:
+    - "--incompatible_remap_main_repo"
     test_targets:
     - "--"
     - "..."

docs/BUILD

diff --git a/docs/BUILD b/docs/BUILD
index 748ddbe..865db0b 100644
--- a/docs/BUILD
+++ b/docs/BUILD
@@ -1,7 +1,7 @@
 load("@io_bazel_skydoc//stardoc:stardoc.bzl", "stardoc")
 
 # Note that due to a bug in Bazel 0.22.0, these targets cannot be built without
-# the --experimental_remap_main_repo flag.
+# the --incompatible_remap_main_repo flag.
 stardoc(
     name = "build_test_docs",
     input = "//rules:build_test.bzl",