Update documentation

Author: yannickcr

docs/rules/display-name.md

@@ -14,7 +14,7 @@ var Hello = React.createClass({
 });
 ```
 
-The following patterns are not warnings:
+The following patterns are not considered warnings:
 
 ```js
 var Hello = React.createClass({

docs/rules/no-multi-comp.md

@@ -20,7 +20,7 @@ var HelloJohn = React.createClass({
 });
 ```
 
-The following patterns are not warnings:
+The following patterns are not considered warnings:
 
 ```js
 var Hello = require('./components/Hello');

docs/rules/prop-types.md

@@ -16,7 +16,7 @@ var Hello = React.createClass({
 });
 ```
 
-The following patterns are not warnings:
+The following patterns are not considered warnings:
 
 ```js
 var Hello = React.createClass({

docs/rules/self-closing-comp.md

@@ -10,7 +10,7 @@ The following patterns are considered warnings:
 var HelloJohn = <Hello name="John"></Hello>;
 ```
 
-The following patterns are not warnings:
+The following patterns are not considered warnings:
 
 ```js
 var contentContainer = <div className="content"></div>;

docs/rules/wrap-multilines.md

@@ -16,7 +16,7 @@ var Hello = React.createClass({
 });
 ```
 
-The following patterns are not warnings:
+The following patterns are not considered warnings:
 
 ```js
 var singleLineJSX = <p>Hello</p>