Data flow: Enable syntax highlighting in QLDoc snippets

java/ql/src/semmle/code/java/dataflow/internal/DataFlowImpl.qll

@@ -19,7 +19,7 @@ import DataFlowImplSpecific::Public
  * a subclass whose characteristic predicate is a unique singleton string.
  * For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends DataFlow::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -37,7 +37,7 @@ import DataFlowImplSpecific::Public
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/DataFlowImpl2.qll

@@ -19,7 +19,7 @@ import DataFlowImplSpecific::Public
  * a subclass whose characteristic predicate is a unique singleton string.
  * For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends DataFlow::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -37,7 +37,7 @@ import DataFlowImplSpecific::Public
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/DataFlowImpl3.qll

@@ -19,7 +19,7 @@ import DataFlowImplSpecific::Public
  * a subclass whose characteristic predicate is a unique singleton string.
  * For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends DataFlow::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -37,7 +37,7 @@ import DataFlowImplSpecific::Public
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/DataFlowImpl4.qll

@@ -19,7 +19,7 @@ import DataFlowImplSpecific::Public
  * a subclass whose characteristic predicate is a unique singleton string.
  * For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends DataFlow::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -37,7 +37,7 @@ import DataFlowImplSpecific::Public
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/DataFlowImpl5.qll

@@ -19,7 +19,7 @@ import DataFlowImplSpecific::Public
  * a subclass whose characteristic predicate is a unique singleton string.
  * For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends DataFlow::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -37,7 +37,7 @@ import DataFlowImplSpecific::Public
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/tainttracking1/TaintTrackingImpl.qll

@@ -26,7 +26,7 @@ private import TaintTrackingParameter::Private
  * To create a configuration, extend this class with a subclass whose
  * characteristic predicate is a unique singleton string. For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends TaintTracking::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -41,7 +41,7 @@ private import TaintTrackingParameter::Private
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *

java/ql/src/semmle/code/java/dataflow/internal/tainttracking2/TaintTrackingImpl.qll

@@ -26,7 +26,7 @@ private import TaintTrackingParameter::Private
  * To create a configuration, extend this class with a subclass whose
  * characteristic predicate is a unique singleton string. For example, write
  *
- * ```
+ * ```ql
  * class MyAnalysisConfiguration extends TaintTracking::Configuration {
  *   MyAnalysisConfiguration() { this = "MyAnalysisConfiguration" }
  *   // Override `isSource` and `isSink`.
@@ -41,7 +41,7 @@ private import TaintTrackingParameter::Private
  * Then, to query whether there is flow between some `source` and `sink`,
  * write
  *
- * ```
+ * ```ql
  * exists(MyAnalysisConfiguration cfg | cfg.hasFlow(source, sink))
  * ```
  *