Minor fixes in README docs concerning sso

[gbarbon]

Minor fixes and updates in README.md files concerning SSO details.

Related Issue
N/A

Description of the solution adopted
N/A

Screenshots
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Any side note on the changes made
N/A

[codecov]

Codecov Report

Merging #2985 into develop will decrease coverage by 0.03%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #2985      +/-   ##
=============================================
- Coverage      57.01%   56.98%   -0.04%     
+ Complexity      2597     2596       -1     
=============================================
  Files           1062     1062              
  Lines          22978    22978              
  Branches        2043     2043              
=============================================
- Hits           13100    13093       -7     
- Misses          8915     8919       +4     
- Partials         963      966       +3     

Impacted Files	Coverage Δ	Complexity Δ
...pua/broker/core/listener/ErrorMessageListener.java	70.83% <0.00%> (-8.34%)	0.00% <0.00%> (ø%)
...ua/broker/core/listener/DeviceMessageListener.java	60.46% <0.00%> (-6.98%)	0.00% <0.00%> (ø%)
...ce/management/commons/call/DeviceCallExecutor.java	62.79% <0.00%> (-4.66%)	0.00% <0.00%> (ø%)