message: Add link to EC spec and ensure the xmlns example for ECSchema is not a link
diff: @@ -20,13 +20,13 @@ The rules are broken into the different parts of the Schema they are validated a
  #### BIS-001 <a name="BIS-001"></a>
  -A schema must load and pass EC3.1 spec validation. **_XXXX NEED LINK_**
  +A schema must load and pass EC3.1 [spec validation](../ec/ec-schema-validation.md).
  #### BIS-002 <a name="BIS-002"></a>
  A schema's ECXML version must be at least, 3.1.
  -- http://www.bentley.com/schemas/Bentley.ECXML.3.1
  +- `<ECSchema ... xmlns=http://www.bentley.com/schemas/Bentley.ECXML.3.1 />`
  #### BIS-003 <a name="BIS-003"></a>
  @@ -35,6 +35,7 @@ A schema may not reference any EC2 or EC3.0 schemas.
  #### BIS-004 <a name="BIS-004"></a>
  A schema must specify a three-part version number
  +
  - The version number must be in the format RR.WW.mm (that is, Read.Write.Minor).
  - Each version component must be zero-padded to two digits (e.g. 01.02.00).
  