Update docs

Author: alinaliBQ

cpp/src/arrow/flight/sql/odbc/odbc_impl/odbc_statement.cc

@@ -737,8 +737,8 @@ bool ODBCStatement::GetData(SQLSMALLINT record_number, SQLSMALLINT c_type,
 
 void ODBCStatement::GetColumnCount(SQLSMALLINT* column_count_ptr) {
   if (!column_count_ptr) {
-    // columnCountPtr is not valid, do nothing as ODBC spec does not mention this as an
-    // error
+    // column count pointer is not valid, do nothing as ODBC spec does not mention this as
+    // an error
     return;
   }
   size_t column_count = ird_->GetRecords().size();

cpp/src/arrow/flight/sql/odbc/odbc_impl/odbc_statement.h

@@ -80,9 +80,7 @@ class ODBCStatement : public ODBCHandle<ODBCStatement> {
   bool GetData(SQLSMALLINT record_number, SQLSMALLINT c_type, SQLPOINTER data_ptr,
                SQLLEN buffer_length, SQLLEN* indicator_ptr);
 
-  /**
-   * @brief Get number of columns from data set
-   */
+  /// \brief Return number of columns from data set
   void GetColumnCount(SQLSMALLINT* column_count_ptr);
 
   /**