Add footnote and refine definitions

Author: JavaJoeS

team/bundles/org.eclipse.core.pki/README.md

@@ -1,7 +1,7 @@
 
-	Public Key Infrastructure Core Package
+###	Public Key Infrastructure Core Package
 
-The comprehensive system required to provide public key encryption and digital signature services is known as a Public Key Infrastructure (PKI). The purpose of a PKI is to manage keys and certificates. By managing keys and certificates through a PKI, an organization establishes and maintains a trustworthy networking environment.
+The comprehensive system required to provide public key encryption and digital signature services is known as a **Public Key Infrastructure (PKI)**. The purpose of a PKI is to manage keys and certificates. By managing keys and certificates through a PKI, an organization establishes and maintains a trustworthy networking environment \[^1].
 
 This package is implemented in Java programming language and allows a user to setup an SSLContext to use inside the Eclipse architecture.  Using this core package there are two ways to initialize the PKI setup, (additionally,  A UI is forthcoming org.eclipse.pki.ui ), The preferred option is specified in the 2nd paragraph below. That option takes a clear text password and allows the core pki package to encrypt it for any subsequent usage.
 
@@ -31,4 +31,5 @@ This package is implemented in Java programming language and allows a user to se
 	javax.net.ssl.cfgFileLocation=NONE ( or for PKCS11; /etc/opensc/pkcs11_java.cfg )
 
 
+ \[^1]: *[PKI definition: Eclipse Foundation Cyclone](https://cyclonedds.io/docs/cyclonedds/latest/security/public_key_infrastructure.html)*