Cais r3 doc fixes (#4974)

* StatesAndContract.kt to TemplateContract.kt

* Updating to reflect new template structure

* Update tut-two-party-contract.rst

docs/source/hello-world-template.rst

@@ -46,18 +46,18 @@ For this tutorial, we will only be modifying the following files:
     .. code-block:: java
 
         // 1. The state
-        cordapp-contracts-states/src/main/java/com/template/TemplateState.java
+        contracts/src/main/java/com/template/states/TemplateState.java
 
         // 2. The flow
-        cordapp/src/main/java/com/template/Initiator.java
+        workflows/src/main/java/com/template/flows/Initiator.java
 
     .. code-block:: kotlin
 
         // 1. The state
-        cordapp-contracts-states/src/main/kotlin/com/template/StatesAndContracts.kt
+        contracts/src/main/kotlin/com/template/states/TemplateState.kt
 
         // 2. The flow
-        cordapp/src/main/kotlin/com/template/Flows.kt
+        workflows/src/main/kotlin/com/template/flows/Flows.kt
 
 Progress so far
 ---------------

docs/source/tut-two-party-contract.rst

@@ -77,7 +77,7 @@ We can picture this transaction as follows:
 Defining IOUContract
 --------------------
 Let's write a contract that enforces these constraints. We'll do this by modifying either ``TemplateContract.java`` or
-``StatesAndContracts.kt`` and updating ``TemplateContract`` to define an ``IOUContract``:
+``TemplateContract.kt`` and updating to define an ``IOUContract``:
 
 .. container:: codeset
 
@@ -194,4 +194,4 @@ We've now written an ``IOUContract`` constraining the evolution of each ``IOUSta
   must be different entities
 
 Next, we'll update the ``IOUFlow`` so that it obeys these contract constraints when issuing an ``IOUState`` onto the
-ledger.
+ledger.