Sync .htaccess from asf-site branch (#207)

diff --git a/landing-pages/site/static/.htaccess b/landing-pages/site/static/.htaccess
new file mode 100644
index 0000000..4f647c5
--- /dev/null
+++ b/landing-pages/site/static/.htaccess
@@ -0,0 +1,4 @@
+RedirectMatch Permanent ^/((_api|_images|_modules|_sources|_static|howto)/.*)$ "https://airflow.apache.org/docs/stable/$1"
+RedirectMatch Permanent ^/((1.10.1|1.10.2|1.10.3|1.10.4|1.10.5|1.10.6)/.*)$ "https://airflow.apache.org/docs/$1"
+RedirectMatch Permanent ^/((api|changelog|cli|concepts|errors|faq|genindex|http-routingtable|installation|integration|kubernetes|license|lineage|macros|metrics|plugins|privacy_notice|profiling|project|py-modindex|scheduler|search|security|start|timezone|tutorial|ui)(\.html)?)$ "https://airflow.apache.org/docs/stable/$1"
+Redirect Permanent /objects.inv https://airflow.apache.org/docs/stable/objects.inv