Small index page tweak (#10358)

* Small index page tweak

* Update docs/user/index.rst

Co-authored-by: Eric Holscher <[email protected]>

* pre-commit failed when merging GitHub suggestion :yawn:

---------

Co-authored-by: Eric Holscher <[email protected]>

Author: benjaoming

docs/user/index.rst

@@ -138,7 +138,8 @@ Get a high-level overview of our platform:
 How-to guides
 -------------
 
-Need to get something specific done? These guides provide step-by-step instructions on various areas:
+Need to get something specific done?
+These guides provide step-by-step instructions in key areas to get you up to speed faster:
 
 .. Descriptions here are active, learn, setup, etc.
 .. The chosen sample of how-tos is intended reflect to width of the how-to section
@@ -159,7 +160,8 @@ Need to get something specific done? These guides provide step-by-step instructi
 Reference
 ---------
 
-Need to know how something works? Our references provide the details:
+Need to know how something works?
+Here are a few of the most important reference docs:
 
 .. Descriptions here sound like reference