[docs] Fix couple minor typos/spelling

Author: Paul Shen

docs/_js/examples/timer.js

@@ -17,7 +17,7 @@ var Timer = React.createClass({\n\
   render: function() {\n\
     return (\n\
       <div>\n\
-        {'Seconds Ellapsed: ' + this.state.secondsElapsed}\n\
+        {'Seconds Elapsed: ' + this.state.secondsElapsed}\n\
       </div>\n\
     );\n\
   }\n\

docs/docs/syntax.md

@@ -10,7 +10,7 @@ next: component-basics.html
 JSX is a JavaScript XML syntax extension recommended (but not required) for use
 with React.
 
-JSX makes code that deeply nested React components more readable, and writing it
+JSX makes code that deeply nests React components more readable, and writing it
 feels like writing HTML. React documentation examples make use of JSX.
 
 ## The Transform