Fix wrong VS version for P0682R1 in "Microsoft C/C++ language conformance by Visual Studio version"

Author: Rageking8

docs/overview/visual-cpp-language-conformance.md

@@ -334,7 +334,7 @@ A more detailed listing of Standard Library features and bug fixes by product ve
 | &emsp;[`P0607R0 Inline Variables for the Standard Library`](https://wg21.link/p0607r0) | VS 2017 15.5 <sup>[17](#note_17)</sup> |
 | &emsp;[`P0618R0 Deprecating <codecvt>`](https://wg21.link/p0618r0) | VS 2017 15.5 <sup>[17](#note_17)</sup> |
 | **C++17 Standard library features (Defect reports)** | **Supported** |
-| &emsp;[`P0682R1 Repairing Elementary String Conversions`](https://wg21.link/P0682R1) | VS 2015 15.7 <sup>[17](#note_17)</sup> |
+| &emsp;[`P0682R1 Repairing Elementary String Conversions`](https://wg21.link/P0682R1) | VS 2017 15.7 <sup>[17](#note_17)</sup> |
 | &emsp;[`P1164R1 Making create_directory() Intuitive`](https://wg21.link/P1164R1) | VS 2019 16.0 <sup>[14](#note_14)</sup> |
 | **C++20 Standard library features** | **Supported** |
 | &emsp;[`P0809R0 Comparing Unordered Containers`](https://wg21.link/p0809r0) | VS 2010 <sup>[14](#note_14)</sup> |