doc: fix mistyped repository name

Fix incorrect repo name in implementations table that can be found in
`README.md` and `doc/index.md`.

Backport-of: #45
PR-URL: #111
Reviewed-by: Mykola Bilochub <nbelochub@gmail.com>

README.md

@@ -82,7 +82,7 @@ Then proceed to the documentation at <https://metarhia.github.io/JSTP/>.
 
 | Implementation | Parser | TCP Client | TCP Server | WebSocket Client | WebSocket Server | Status |
 | --- | :---: | :---: | :---: | :---: | :---: | --- |
-| JavaScript<br>[metarhia/Impress](https://github.com/metarhia/JSTP) | ✓ | ✓ | ✓ | ✓ | ✓ | reference implementation |
+| JavaScript<br>[metarhia/JSTP](https://github.com/metarhia/JSTP) | ✓ | ✓ | ✓ | ✓ | ✓ | reference implementation |
 | C++<br>[NechaiDO/JSTP-cpp](https://github.com/NechaiDO/JSTP-cpp) | ✓ | ✗ | ✗ | ✗ | ✗ | stable |
 | Qt C++<br>[NechaiDO/QJSTP](https://github.com/NechaiDO/QJSTP) | ✓ | ✗ | ✗ | ✗ | ✗ | stable |
 | Swift (iOS)<br>[JSTPMobile/iOS](https://github.com/JSTPMobile/iOS) | ✓ | ✗ | ✗ | ✗ | ✗ | in development |

doc/index.md

@@ -89,7 +89,7 @@ processing that are based on some simple assumptions:
 
 | Implementation | Parser | TCP Client | TCP Server | WebSocket Client | WebSocket Server | Status |
 | --- | :---: | :---: | :---: | :---: | :---: | --- |
-| JavaScript<br>[metarhia/Impress](https://github.com/metarhia/JSTP) | ✓ | ✓ | ✓ | ✓ | ✓ | reference implementation |
+| JavaScript<br>[metarhia/JSTP](https://github.com/metarhia/JSTP) | ✓ | ✓ | ✓ | ✓ | ✓ | reference implementation |
 | C++<br>[NechaiDO/JSTP-cpp](https://github.com/NechaiDO/JSTP-cpp) | ✓ | ✗ | ✗ | ✗ | ✗ | stable |
 | Qt C++<br>[NechaiDO/QJSTP](https://github.com/NechaiDO/QJSTP) | ✓ | ✗ | ✗ | ✗ | ✗ | stable |
 | Swift (iOS)<br>[JSTPMobile/iOS](https://github.com/JSTPMobile/iOS) | ✓ | ✗ | ✗ | ✗ | ✗ | in development |