docs: Refactor README.md formatting and remove dividers

Removed unnecessary horizontal rules and cleaned up formatting.

Signed-off-by: mayannuz <mayannuz@cisco.com>

Author: mayannuz

docs/contribute/wip/README.md

@@ -4,11 +4,8 @@ Thanks for your interest in contributing to `AGNTCY Identity Service Subgroups (
 These SGs target specific problems within the `AGNTCY Identity Service Working Group`.
 Please choose the subgroup(s) that you are interested on, join their recurrent calls, and contribute.
 
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 ## 1) DCR
 
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 ## 2) Subject Context Transfer Subgroup
 
@@ -33,28 +30,14 @@ Join from a video system or application
 Dial 26641313282@webex.com
 You can also dial 173.243.2.68 and enter your meeting number.
 
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 ## 3) XAA
 
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 ## 4) MFA
 
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 ## 5) Audit Logs and Standardization
 
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 ## 6) Policy Engine Integration
 
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 ## 7) Brokered Identity Gateways
 
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 ## 8) Cross Organization Initiatives
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