update doc string

Author: PunitLodha

clippy_lints/src/str_to_string.rs

@@ -16,12 +16,12 @@ declare_clippy_lint! {
     ///
     /// ```rust
     /// // example code where clippy issues a warning
-    /// let _ = "str".to_string()
+    /// let _ = "str".to_string();
     /// ```
     /// Use instead:
     /// ```rust
     /// // example code which does not raise clippy warning
-    /// let _ = "str".to_owned()
+    /// let _ = "str".to_owned();
     /// ```
     pub STR_TO_STRING,
     restriction,

clippy_lints/src/string_to_string.rs

@@ -16,13 +16,13 @@ declare_clippy_lint! {
     /// ```rust
     /// // example code where clippy issues a warning
     /// let msg = String::from("Hello World");
-    /// let _ = msg.to_string()
+    /// let _ = msg.to_string();
     /// ```
     /// Use instead:
     /// ```rust
     /// // example code which does not raise clippy warning
     /// let msg = String::from("Hello World");
-    /// let _ = msg.clone()
+    /// let _ = msg.clone();
     /// ```
     pub STRING_TO_STRING,
     restriction,