Update intro-to-rum.rst

Fixed typo

Author: jelkhouri-splunk

rum/intro-to-rum.rst

@@ -46,7 +46,7 @@ If you want to monitor your application from browser to back-end, then integrate
 
 If a span in Splunk RUM has an associated back-end span, an :guilabel:`APM` link appears next to the span in the waterfall view and opens the span details page in Splunk APM.  
 
-By default, the Splunk Distributions of OpenTelemetry already send the ``Server-Timing`` header. The header links spans from the browser with back-end spans and traces.
+By default, the Splunk Distribution of OpenTelemetry already send the ``Server-Timing`` header. The header links spans from the browser with back-end spans and traces.
 
 Splunk RUM for Browser uses the server-timing header response times to associate the RUM span with the corresponding APM trace. The APM environment variable for controlling the ``Server-Timing`` header  is ``SPLUNK_TRACE_RESPONSE_HEADER_ENABLED=true``. Set ``SPLUNK_TRACE_RESPONSE_HEADER_ENABLED=true`` to link to Splunk APM. 
 
@@ -55,4 +55,4 @@ For more information on Splunk APM, see :ref:`Monitor applications with Splunk A
 
 Get data in 
 =============================
-To start instrumenting your application with Splunk RUM, see :ref:`rum-setup`. 
+To start instrumenting your application with Splunk RUM, see :ref:`rum-setup`.