docs: fixed link formatting in README (#96)

reStructuredText doesn't allow link insertion in bold text block

Author: staritjari

README.rst

@@ -36,7 +36,7 @@ influxdb-client-python
 
 InfluxDB 2.0 python client library.
 
-**Note: Use this client library with InfluxDB 2.x and InfluxDB 1.8+. For connecting to InfluxDB 1.7 or earlier instances, use the `influxdb-python <https://github.com/influxdata/influxdb-python>`_ client library.**
+**Note: Use this client library with InfluxDB 2.x and InfluxDB 1.8+. For connecting to InfluxDB 1.7 or earlier instances, use the** `influxdb-python <https://github.com/influxdata/influxdb-python>`_ **client library.**
 
 InfluxDB 2.0 client features
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