removed uses of testdata:/// scheme from the documentation sources

META-INF/RASCAL.MF

@@ -1,3 +1,3 @@
 Project-Name: rascal-website
-Sources: courses/Recipes, courses/Rascal, |rascal://org/rascalmpl/library|
+Source: courses/Recipes, courses/Rascal
 Require-Libraries: |lib://rascal-tutor|

courses/Recipes/Metrics/MeasuringJava/MeasuringClasses/MeasuringClasses.md

@@ -15,7 +15,11 @@ of these modules later. For now we will go through using them in a few examples.
 
 ```rascal-prepare
 import IO;
-copy(|zip+testdata:///m3/snakes-and-ladders-project-source.zip!/|, |tmp:///snakes-and-ladders|, recursive=true)
+if ({l} := findResources("Metrics/MeasuringJava/snakes-and-ladders-project-source.zip")) {
+   copy(l[scheme="zip+<l.scheme>"][path="<l.path>!/"], |tmp:///snakes-and-ladders|, recursive=true);
+} else {
+   throw "failed to copy necessary source code to analyze for this example";
+}
 ```
 
 ```rascal-shell

courses/Recipes/Metrics/MeasuringJava/MeasuringJava.md

@@ -44,7 +44,11 @@ of these modules later. For now we will go through using them in a few examples.
 
 ```rascal-prepare
 import IO;
-copy(|zip+testdata:///m3/snakes-and-ladders-project-source.zip!/|, |tmp:///snakes-and-ladders|, recursive=true)
+if ({l} := findResources("Metrics/MeasuringJava/snakes-and-ladders-project-source.zip")) {
+   copy(l[scheme="zip+<l.scheme>"][path="<l.path>!/"], |tmp:///snakes-and-ladders|, recursive=true);
+} else {
+   throw "failed to copy necessary source code to analyze for this example";
+}
 ```
 
 ```rascal-shell

courses/Recipes/Metrics/MeasuringJava/MeasuringMethods/MeasuringMethods.md

@@ -10,7 +10,11 @@ We demonstrate how to extract interesting and accurate information about Java me
 
 ```rascal-prepare
 import IO;
-copy(|zip+testdata:///m3/snakes-and-ladders-project-source.zip!/|, |tmp:///snakes-and-ladders|, recursive=true)
+if ({l} := findResources("Metrics/MeasuringJava/snakes-and-ladders-project-source.zip")) {
+   copy(l[scheme="zip+<l.scheme>"][path="<l.path>!/"], |tmp:///snakes-and-ladders|, recursive=true);
+} else {
+   throw "failed to copy necessary source code to analyze for this example";
+}
 ```
 
 ```rascal-shell

courses/WhyRascal/UseCases/CodeAsData/CodeAsData.md

@@ -11,7 +11,11 @@ language independent module called ((Library:module:analysis::m3::Core)) and a J
 
 ```rascal-prepare
 import IO;
-copy(|zip+testdata:///m3/snakes-and-ladders-project-source.zip!/|, |tmp:///snakes-and-ladders|, recursive=true)
+if ({l} := findResources("Metrics/MeasuringJava/snakes-and-ladders-project-source.zip")) {
+   copy(l[scheme="zip+<l.scheme>"][path="<l.path>!/"], |tmp:///snakes-and-ladders|, recursive=true);
+} else {
+   throw "failed to copy necessary source code to analyze for this example";
+}
 ```
 
 ```rascal-shell