remove @example doc tags

include/tgbotxx/Api.hpp

@@ -709,7 +709,7 @@ namespace tgbotxx {
       /// @param messageThreadId Optional. Unique identifier for the target message thread (topic) of the forum; for forum supergroups only
       /// @returns True on success.
       /// @throws Exception on failure
-      /// @example Example: The ImageBot needs some time to process a request and upload the image. https://t.me/imagebot
+      /// Example: The ImageBot needs some time to process a request and upload the image. https://t.me/imagebot
       /// Instead of sending a text message along the lines of “Retrieving image, please wait…”,
       /// the bot may use sendChatAction with action = upload_photo. The user will see a “sending photo” status for the bot.
       /// @note We only recommend using this method when a response from the bot will take a noticeable amount of time to arrive.

include/tgbotxx/objects/ForceReply.hpp

@@ -6,7 +6,7 @@ namespace tgbotxx {
   /// Telegram clients will display a reply interface to the user (act as if the user has selected the bot's message and tapped 'Reply').
   /// This can be extremely useful if you want to create user-friendly step-by-step interfaces without having to sacrifice privacy mode.
   /// https://core.telegram.org/bots/features#privacy-mode
-  /// @example Example: A poll bot for groups runs in privacy mode (only receives commands, replies to its messages and mentions).
+  /// Example. A poll bot for groups runs in privacy mode (only receives commands, replies to its messages and mentions).
   /// There could be two ways to create a new poll:
   /// - Explain the user how to send a command with parameters (e.g. /newpoll question answer1 answer2). May be appealing for hardcore users but lacks modern day polish.
   /// - Guide the user through a step-by-step process. 'Please send me your question', 'Cool, now let's add the first answer option', 'Great. Keep adding answer options, then send /done when you're ready'.
@@ -22,7 +22,7 @@ namespace tgbotxx {
       bool forceReply{};
 
       /// @brief Optional. The placeholder to be shown in the input field when the reply is active; 1-64 characters
-      std::string inputFieldPlaceholder{};
+      std::string inputFieldPlaceholder;
 
       /// @brief Optional. Use this parameter if you want to force reply from specific users only.
       /// Targets:

include/tgbotxx/objects/ReplyKeyboardMarkup.hpp

@@ -39,7 +39,7 @@ namespace tgbotxx {
       /// - 1) users that are @mentioned in the text of the Message object;
       /// - 2) if the bot's message is a reply (has reply_to_message_id), sender of the original message.
       ///
-      /// @example A user requests to change the bot's language, bot replies to the request with a keyboard to select the new language.
+      /// Example A user requests to change the bot's language, bot replies to the request with a keyboard to select the new language.
       /// Other users in the group don't see the keyboard.
       bool selective{};
 

include/tgbotxx/objects/ReplyKeyboardRemove.hpp

@@ -21,7 +21,7 @@ namespace tgbotxx {
       /// - 1) users that are @mentioned in the text of the Message object;
       /// - 2) if the bot's message is a reply (has reply_to_message_id), sender of the original message.
       ///
-      /// @example A user votes in a poll, bot returns confirmation message in reply to the vote and removes the keyboard for that user,
+      /// Example A user votes in a poll, bot returns confirmation message in reply to the vote and removes the keyboard for that user,
       /// while still showing the keyboard with poll options to users who haven't voted yet.
       bool selective{};
 

include/tgbotxx/utils/StringUtils.hpp

@@ -9,10 +9,10 @@ namespace tgbotxx {
   /// @brief Namespace contains useful string related utility functions.
   namespace StringUtils {
     /// @brief Form a string from a container with a delimiter
-    /// @example: array = [1,2,3]
-    ///           StringUtils::join(array, ",") -> "1,2,3"
     /// @param con: Container of T elements
     /// @param delim: Text to put between each element T
+    /// Example: array = [1,2,3]
+    ///           StringUtils::join(array, ",") -> "1,2,3"
     template<typename T, typename D>
     static std::string join(const std::span<T>& con, const D& delim) {
       std::ostringstream oss{};