[basic.string.general] Align both overloads of data

Author: frederick-vs-ja

source/strings.tex

@@ -2238,7 +2238,7 @@
     // \ref{string.ops}, string operations
     constexpr const charT* c_str() const noexcept;
     constexpr const charT* data() const noexcept;
-    constexpr charT* data() noexcept;
+    constexpr charT*       data() noexcept;
     constexpr operator basic_string_view<charT, traits>() const noexcept;
     constexpr allocator_type get_allocator() const noexcept;