Update reach template documentation (#370)

* Update reach template documentation

* Fix spacing in docs example

Co-authored-by: devin ivy <[email protected]>

Author: jonathansamines

API.md

@@ -265,11 +265,10 @@ Replaces string parameters (`{name}`) with their corresponding object key values
 - `options` - optional [`reach()`](#reachobj-chain-options) options.
 
 ```javascript
+const template = '1+{a.b.c}=2';
+const obj = { a: { b: { c: 1 } } };
 
-const chain = 'a.b.c';
-const obj = {a : {b : { c : 1}}};
-
-Hoek.reachTemplate(obj, '1+{a.b.c}=2'); // returns '1+1=2'
+Hoek.reachTemplate(obj, template); // returns '1+1=2'
 ```
 
 #### stringify(...args)