Update aws-parameter-store.md (#1931)

Signed-off-by: Denis Policastro <denis.policastro@gmail.com>

Signed-off-by: Denis Policastro <denis.policastro@gmail.com>

docs/provider/aws-parameter-store.md

@@ -30,6 +30,7 @@ Create a IAM Policy to pin down access to secrets matching `dev-*`, for further
     {
       "Effect": "Allow",
       "Action": [
+        "ssm:GetParameter",
         "ssm:GetParameterWithContext",
         "ssm:ListTagsForResourceWithContext",
         "ssm:DescribeParametersWithContext",