Merge pull request github#3763 from adityasharad/java/training-example-brace

Fix training example syntax

Author: shati-patel

docs/language/ql-training/query-examples/cpp/data-flow-cpp-2.ql

@@ -2,11 +2,11 @@ import cpp
 import semmle.code.cpp.dataflow.DataFlow
 import semmle.code.cpp.commons.Printf
 
-class SourceNode extends DataFlow::Node { ... }
+class SourceNode extends DataFlow::Node { /* ... */ }
 
 from FormattingFunction f, Call c, SourceNode src, DataFlow::Node arg
 where c.getTarget() = f and
       arg.asExpr() = c.getArgument(f.getFormatParameterIndex()) and
       DataFlow::localFlow(src, arg) and
       not src.asExpr() instanceof StringLiteral
-select arg, "Non-constant format string."
+select arg, "Non-constant format string."

docs/language/ql-training/query-examples/java/empty-if-java-class.ql

@@ -3,10 +3,10 @@ import java
 class EmptyBlock extends Block {
   EmptyBlock() {
     this.getNumStmt() = 0
-  
+  }
 }
 
 from IfStmt ifstmt
 where ifstmt.getThen() instanceof
       EmptyBlock
-select ifstmt
+select ifstmt