GUACAMOLE-1289: Update recently-added, Duo-related dependency names to match the naming style of their corresponding projects.

doc/licenses/logging-interceptor-4.9.1/README

@@ -1,4 +1,4 @@
-okhttp logging-interceptor (https://square.github.io/okhttp/)
+OkHttp Logging Interceptor (https://square.github.io/okhttp/)
 -------------------------------------------------------------
 
     Version: 4.9.1

doc/licenses/okhttp-4.12.0/README

@@ -1,7 +1,8 @@
-okhttp (https://square.github.io/okhttp/)
----------------------------------------------
+OkHttp (https://square.github.io/okhttp/)
+-----------------------------------------
 
     Version: 4.12.0
     From: 'Square Inc'
     License(s):
         Apache 2.0
+

doc/licenses/okio-3.6.0/README

@@ -1,7 +1,8 @@
-okio (https://square.github.io/okio/)
----------------------------------------------
+Okio (https://square.github.io/okio/)
+-------------------------------------
 
     Version: 3.6.0
     From: 'Square Inc'
     License(s):
         Apache 2.0
+

doc/licenses/retrofit-2.9.0/README

@@ -1,4 +1,4 @@
-retrofit (https://square.github.io/retrofit/)
+Retrofit (https://square.github.io/retrofit/)
 ---------------------------------------------
 
     Version: 2.9.0