DOC/MINOR: pod-maxconn annotation value in the example should be a string

Author: hdurand0710

documentation/annotations.md

@@ -1051,7 +1051,7 @@ Possible values:
 Example:
 
 ```yaml
-pod-maxconn: 30
+pod-maxconn: "30"
 ```
 
 <p align='right'><a href='#available-annotations'>:arrow_up_small: back to top</a></p>

documentation/doc.yaml

@@ -1152,7 +1152,7 @@ annotations:
       - ingress
       - configmap
     version_min: "1.4"
-    example: ["pod-maxconn: 30"]
+    example: ['pod-maxconn: "30"']
   - title: proxy-protocol
     type: IPs or CIDRs
     group: proxy-protocol