Fix "tools" docs pages (boostorg#1852)

Author: gregjkal

core/views.py

@@ -501,6 +501,7 @@ def normalize_boost_doc_path(content_path: str) -> str:
 FULLY_MODERNIZED_LIB_VERSIONS = [
     # FIXME: we should have a way to opt-in via a flag on the library/lib-version.
     #  Hard-coding these here as a quick fix for now.
+    "tools/",  # Not a library version, but tools are somewhat analogous
     "1_87_0/libs/charconv",
     "1_88_0/libs/charconv",
     "1_89_0/libs/charconv",

kube/boost/templates/configmap-nginx.yaml

@@ -123,7 +123,7 @@ data:
       location = /development/tests/master/developer/issues.html { return 301 https://regression.boost.io/master/developer/issues.html; }
       location = /development/tests/develop/developer/summary.html { return 301 https://regression.boost.io/develop/developer/summary.html; }
       location = /development/tests/develop/developer/issues.html { return 301 https://regression.boost.io/develop/developer/issues.html; }
-      location = /development/running_regression_tests.html { return 301 /doc/contributor-guide/testing/regression-tests.html; }
+      location ~ ^/(development/running_regression_tests.html|doc/regression)$ { return 301 /doc/contributor-guide/testing/regression-tests.html; }
       location = /development/requirements.html { return 301 /doc/contributor-guide/index.html; }
       location = /development/test.html { return 301 /doc/contributor-guide/testing/intro.html; }
       location = /development/header.html { return 301 /doc/contributor-guide/design-guide/headers.html; }