refactor docs and example (#386)

Author: aryanmehrotra

docs/advanced-guide/using-publisher-subscriber/page.md

@@ -21,7 +21,7 @@ Some of the configurations that are required to configure the PubSub backend tha
 that are specific for the type of message broker user wants to use. 
 `PUBSUB_BACKEND` defines which message broker the application needs to use.
 
-### Kafka
+### KAFKA
 
 #### Configs
 ```dotenv
@@ -52,7 +52,7 @@ docker run -d \
   confluentinc/cp-kafka:7.0.1
 ```
 
-### Google
+### GOOGLE
 
 #### Configs
 ```dotenv
@@ -73,7 +73,7 @@ docker run --name=gcloud-emulator -d -p 8086:8086 \
 > **Note**: In Google PubSub only one subscription name can access one topic, framework appends the topic name and subscription name to form the
 > unique subscription name on the Google client.
 
-### Mqtt
+### MQTT
 
 #### Configs
 ```dotenv
@@ -101,7 +101,7 @@ docker run -d \
 ```
 > **Note**: find the default mosquitto config file {% new-tab-link title="here" href="https://github.com/eclipse/mosquitto/blob/master/mosquitto.conf" /%}
 
-## Subscribing to Pub/Sub
+## Subscribing
 Adding a subscriber is similar to adding an HTTP handler, which makes it easier to develop scalable applications,
 as it decoupled from the Sender/Publisher.
 Users can define a subscriber handler and do the message processing and
@@ -168,7 +168,7 @@ func main() {
 }
 ```
 
-## Publishing to Pub/Sub
+## Publishing
 The publishing of message is advised to done at the point where the message is being generated.
 To facilitate this, user can access the publishing interface from `gofr Context(ctx)` to publish messages.
 

docs/navigation.js

@@ -21,7 +21,7 @@ export const navigation = [
             { title: 'Monitoring Service Health', href: '/docs/advanced-guide/monitoring-service-health' },
             { title: 'Handling Data Migrations', href: '/docs/advanced-guide/handling-data-migrations' },
             { title: 'Writing gRPC Server', href: '/docs/advanced-guide/grpc' },
-            { title: 'Using Publisher and Subscriber', href: '/docs/advanced-guide/using-publisher-subscriber' }
+            { title: 'Using Pub/Sub', href: '/docs/advanced-guide/using-publisher-subscriber' }
             // { title: 'Dealing with Remote Files', href: '/docs/advanced-guide/remote-files' },
             // { title: 'Supporting OAuth', href: '/docs/advanced-guide/oauth' },
             // { title: 'Creating a Static File Server', href: '/docs/advanced-guide/static-file-server' },

docs/quick-start/introduction/page.md

@@ -2,8 +2,8 @@
 -  Go 1.20 or above.
    To check the version use the following command `go version`.
 
--  Prior familiarity with Golang syntax is essential. [Golang Tour](https://tour.golang.org/) is highly recommended as it has an excellent guided tour.
-
+-  Prior familiarity with Golang syntax is essential. {% new-tab-link title="Golang Tour" href="https://tour.golang.org/" /%} is highly recommended as it has an excellent guided tour.
+   
 ## Write your first GoFr API
 
 Let's start by initializing the go module by using the following command.

examples/using-custom-metrics/README.md

@@ -1,6 +1,7 @@
 # Custom Metrics Example
 
 This GoFr example demonstrates the use of custom metrics through a simple http server that creates and populate metrics.
+GoFr by default pushes metrics to port `2121` on `/metrics` endpoint.
 
 ### To run the example use the command below:
 ```console