Update openapi.rst (#327)

Minor typo on "because"

.idea/inspectionProfiles/Project_Default.xml

@@ -55,11 +55,6 @@
       </option>
     </inspection_tool>
     <inspection_tool class="PyShadowingNamesInspection" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
-    <inspection_tool class="PyUnusedLocalInspection" enabled="false" level="WEAK WARNING" enabled_by_default="false">
-      <option name="ignoreTupleUnpacking" value="true" />
-      <option name="ignoreLambdaParameters" value="true" />
-      <option name="ignoreLoopIterationVariables" value="true" />
-    </inspection_tool>
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />
       <option name="processLiterals" value="true" />

docs/openapi.rst

@@ -14,7 +14,7 @@ This library generates OpenAPI 2.0 documents. The authoritative specification fo
 be the official documentation over at `swagger.io <https://swagger.io/>`__ and the `OpenAPI 2.0 specification
 page <https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md>`__.
 
-Beause the above specifications are a bit heavy and convoluted, here is a general overview of how the specification
+Because the above specifications are a bit heavy and convoluted, here is a general overview of how the specification
 is structured, starting from the root ``Swagger`` object.
 
 * :class:`.Swagger` object