Alias issue template (#269)

* Update issue templates

* Add alias link

.github/ISSUE_TEMPLATE/Alias_request.md

@@ -0,0 +1,29 @@
+---
+name: Alias request
+about: Request a new policy alias
+---
+<!--
+    Thank you for contributing!
+
+    ISSUE TITLE:
+    The title must include the Resource Provider namespace, resourceType(s) and property name. 
+    E.g: "Alias request: "Microsoft.Compute/storageAccounts/propertyName"
+
+    ISSUE DESCRIPTION (this template):
+    Please describe your scenario, what properties you need aliases on, and include a sample
+    policy definition.
+-->
+
+### Scenario
+
+What are you trying to achieve using Azure Policy?
+
+### Alias
+
+Include details about the alias being requested. Details on aliases are available [**here**](https://docs.microsoft.com/en-us/azure/governance/policy/concepts/definition-structure#aliases).
+- What resource provider and resource type is involved?
+- What property on that resource type do you wish to expose?
+
+### Example policy definition
+
+Please include a sample policy definition that shows how you would like to use this new alias.

.github/ISSUE_TEMPLATE/Policy_package_proposal.md

@@ -1,5 +1,5 @@
 ---
-name: New policy proposal
+name: New built-in policy proposal
 about: If you have a new policy proposal that you think should be created.
 ---
 <!--
@@ -24,7 +24,7 @@ Tell the story about what you would like Policy to do
 
 ### Proposed parameters
 
-- `[Type]` **ParameterName**:  The description for the property.
+- `[Type]` **ParameterName**:  The description for the parameter.
 
 ### Package details if Guest Configuration