[releng] Update examples to point at 2.3.1

org.eclipse.january.examples/JanuaryExamples.target

@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/mbarbero/fr.obeo.releng.targetplatform -->
-<target name="JanuaryExamples" sequenceNumber="1642596913">
+<target name="JanuaryExamples" sequenceNumber="1643211463">
   <locations>
     <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
       <unit id="org.eclipse.january" version="0.0.0"/>
       <unit id="org.eclipse.january.asserts" version="0.0.0"/>
-      <repository id="january-2.3.1RC3" location="https://download.eclipse.org/january/releasecandidates/2.3.1RC3/repository"/>
+      <repository id="january-2.3.1" location="https://download.eclipse.org/january/releases/2.3.1/repository"/>
     </location>
     <location includeMode="planner" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="false" type="InstallableUnit">
       <unit id="javax.measure.unit-api" version="1.0.0.v20170818-1538"/>

org.eclipse.january.examples/JanuaryExamples.tpd

@@ -7,7 +7,7 @@ target "JanuaryExamples" with source requirements
 // This set of examples is for the latest master branch build of January.
 // The examples are available for the released version of January on the
 // respective release branches (e.g. january_1_0 for the 1.0 release)
-location "https://download.eclipse.org/january/releasecandidates/2.3.1RC3/repository" january-2.3.1RC3 {
+location "https://download.eclipse.org/january/releases/2.3.1/repository" january-2.3.1 {
 	org.eclipse.january lazy
 }