docs: improve the documentation about using function get() for properties

Author: josdejong

README.md

@@ -293,7 +293,19 @@ A property can be unquoted when it only contains characters `a-z`, `A-Z`, `_` an
 ."first name"
 ```
 
-To get the current value itself, use the function `get()` without arguments.
+To get the current value itself, use the function `get` without arguments:
+
+```text
+get()
+```
+
+And, alternatively to the dot notation, the function `get` can be used for properties and nested properties too:
+
+```text
+get("age")
+get("address", "city")
+```
+
 
 ### Values
 

docs/index.html

@@ -424,6 +424,8 @@ <h1>JSON Query</h1>
               <pre><code>.age</code></pre>
               <pre><code>.address.city</code></pre>
               <pre><code>."first name"</code></pre>
+              <pre><code>get()</code></pre>
+              <pre><code>get("address", "city")</code></pre>
               <p>
                 Documentation:
                 <a href="https://github.com/jsonquerylang/jsonquery#properties" target="_blank">Properties</a>