darwin-386 and windows-386 are not supported now

$ curl https://get.helm.sh/helm-v3.2.4-windows-386.tar.gz
<?xml version="1.0"
ding="utf-8"?><Error><Code>BlobNotFound</Code><Message>The specified
 does not exist.
RequestId:6d53f961-d01e-0032-025f-5e4d79000000

$ curl https://get.helm.sh/helm-v2.16.9-darwin-386.tar.gz
<?xml version="1.0"
ding="utf-8"?><Error><Code>BlobNotFound</Code><Message>The specified
 does not exist.
RequestId:81020fad-c01e-0001-0e60-5e12d2000000

Signed-off-by: Ma Xinjian <maxj.fnst@cn.fujitsu.com>

scripts/get

@@ -62,7 +62,7 @@ runAsRoot() {
 # verifySupported checks that the os/arch combination is supported for
 # binary builds.
 verifySupported() {
-  local supported="darwin-386\ndarwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nwindows-386\nwindows-amd64"
+  local supported="darwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nwindows-amd64"
   if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then
     echo "No prebuilt binary for ${OS}-${ARCH}."
     echo "To build from source, go to https://github.com/helm/helm"

scripts/get-helm-3

@@ -60,7 +60,7 @@ runAsRoot() {
 # verifySupported checks that the os/arch combination is supported for
 # binary builds.
 verifySupported() {
-  local supported="darwin-386\ndarwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nlinux-s390x\nwindows-386\nwindows-amd64"
+  local supported="darwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nlinux-s390x\nwindows-amd64"
   if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then
     echo "No prebuilt binary for ${OS}-${ARCH}."
     echo "To build from source, go to https://github.com/helm/helm"