Update README.md

Author: domschl

README.md

@@ -39,7 +39,7 @@ pip install [-U] -e .
 
 ## History
 
-* 0.6.1 (2018-12-26): New API used telnet non-blocking on get which caused problems (d1nd141 [#12](https://github.com/domschl/python-fhem/issues/12)), fixed
+* 0.6.1 (2018-12-26): New API used telnet non-blocking on get which caused problems (d1nd141, [#12](https://github.com/domschl/python-fhem/issues/12)), fixed
 by using blocking telnet i/o.
 * 0.6.0 (2018-12-16): Enhanced and expanded get-API (Andre0512 [#10](https://github.com/domschl/python-fhem/pull/10)). See [online documentation](https://domschl.github.io/python-fhem/doc/_build/html/index.html), especially the new get() method for details on the new functionality. Proprietary logging functions marked deprecated. 
 * 0.5.5 (2018-08-26): Documentation cleanup, automatic documentation with sphinx.