Update example.target and example.p2f to SimRel 2020-06

org.eclipse.handly.examples.adapter/example.target

diff --git a/org.eclipse.handly.examples.adapter/example.target b/org.eclipse.handly.examples.adapter/example.target
index b321fa7..49ee3b1 100644
--- a/org.eclipse.handly.examples.adapter/example.target
+++ b/org.eclipse.handly.examples.adapter/example.target
@@ -15,7 +15,7 @@
 <target name="Adapter Example">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-<repository location="http://download.eclipse.org/releases/2020-03"/>
+<repository location="http://download.eclipse.org/releases/2020-06"/>
 <unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">

org.eclipse.handly.examples.basic/example.p2f

diff --git a/org.eclipse.handly.examples.basic/example.p2f b/org.eclipse.handly.examples.basic/example.p2f
index e13a3a4..f3bb834 100644
--- a/org.eclipse.handly.examples.basic/example.p2f
+++ b/org.eclipse.handly.examples.basic/example.p2f
@@ -16,7 +16,7 @@
   <ius size='1'>
     <iu id='org.eclipse.xtext.sdk.feature.group'>
       <repositories size='1'>
-        <repository location='http://download.eclipse.org/releases/2020-03'/>
+        <repository location='http://download.eclipse.org/releases/2020-06'/>
       </repositories>
     </iu>
   </ius>

org.eclipse.handly.examples.basic/example.target

diff --git a/org.eclipse.handly.examples.basic/example.target b/org.eclipse.handly.examples.basic/example.target
index ba1aa71..6ba84c1 100644
--- a/org.eclipse.handly.examples.basic/example.target
+++ b/org.eclipse.handly.examples.basic/example.target
@@ -15,7 +15,7 @@
 <target name="Basic Example">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-<repository location="http://download.eclipse.org/releases/2020-03"/>
+<repository location="http://download.eclipse.org/releases/2020-06"/>
 <unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>

org.eclipse.handly.examples.jmodel/example.target

diff --git a/org.eclipse.handly.examples.jmodel/example.target b/org.eclipse.handly.examples.jmodel/example.target
index bbede8d..21d66c8 100644
--- a/org.eclipse.handly.examples.jmodel/example.target
+++ b/org.eclipse.handly.examples.jmodel/example.target
@@ -15,7 +15,7 @@
 <target name="JModel Example">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-<repository location="http://download.eclipse.org/releases/2020-03"/>
+<repository location="http://download.eclipse.org/releases/2020-06"/>
 <unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">

org.eclipse.handly.examples.xtext.xtext.ui/example.p2f

diff --git a/org.eclipse.handly.examples.xtext.xtext.ui/example.p2f b/org.eclipse.handly.examples.xtext.xtext.ui/example.p2f
index 06abcf5..20b44cd 100644
--- a/org.eclipse.handly.examples.xtext.xtext.ui/example.p2f
+++ b/org.eclipse.handly.examples.xtext.xtext.ui/example.p2f
@@ -16,7 +16,7 @@
   <ius size='1'>
     <iu id='org.eclipse.xtext.sdk.feature.group'>
       <repositories size='1'>
-        <repository location='http://download.eclipse.org/releases/2020-03'/>
+        <repository location='http://download.eclipse.org/releases/2020-06'/>
       </repositories>
     </iu>
   </ius>

org.eclipse.handly.examples.xtext.xtext.ui/example.target

diff --git a/org.eclipse.handly.examples.xtext.xtext.ui/example.target b/org.eclipse.handly.examples.xtext.xtext.ui/example.target
index 4469d06..c7af49b 100644
--- a/org.eclipse.handly.examples.xtext.xtext.ui/example.target
+++ b/org.eclipse.handly.examples.xtext.xtext.ui/example.target
@@ -15,7 +15,7 @@
 <target name="Xtext-Xtext Example">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-<repository location="http://download.eclipse.org/releases/2020-03"/>
+<repository location="http://download.eclipse.org/releases/2020-06"/>
 <unit id="org.eclipse.sdk.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>