docs(agent): update docs

Author: omarabid

src/pyroscope.rs

@@ -363,7 +363,7 @@ impl PyroscopeAgent {
     /// # Example
     /// ```ignore
     /// let agent = PyroscopeAgent::builder("http://localhost:8080", "my-app").build().unwrap();
-    /// agent.start().unwrap();
+    /// agent.start();
     /// // Expensive operation
     /// agent.stop();
     /// ```   
@@ -378,11 +378,11 @@ impl PyroscopeAgent {
     /// # Example
     /// ```ignore
     /// let agent = PyroscopeAgent::builder("http://localhost:8080", "my-app").build().unwrap();
-    /// agent.start().unwrap();
+    /// agent.start();
     /// // Expensive operation
-    /// agent.add_tags(vec!["tag", "value"]).unwrap();
+    /// agent.add_tags(vec![("tag", "value")]).unwrap();
     /// // Tagged operation
-    /// agent.stop().unwrap();
+    /// agent.stop();
     /// ```
     pub fn add_tags(&mut self, tags: &[(&str, &str)]) -> Result<()> {
         log::debug!("PyroscopeAgent - Adding tags");
@@ -416,11 +416,11 @@ impl PyroscopeAgent {
     /// let agent = PyroscopeAgent::builder("http://localhost:8080", "my-app")
     /// .tags(vec![("tag", "value")])
     /// .build().unwrap();
-    /// agent.start().unwrap();
+    /// agent.start();
     /// // Expensive operation
     /// agent.remove_tags(vec!["tag"]).unwrap();
     /// // Un-Tagged operation
-    /// agent.stop().unwrap();
+    /// agent.stop();
     pub fn remove_tags(&mut self, tags: &[&str]) -> Result<()> {
         log::debug!("PyroscopeAgent - Removing tags");