docs: Fix dual-BOOM-Rocket-Hwacha documentation

The docs indicate that this should be a dual-BOOM and single-Rocket
config, with the Hwacha attached to the Rocket. However, the
'LargeBoomAndHwachaRocketConfig' config only has a single Rocket core.
Added the 'DualLargeBoomAndHwachaRocketConfig' config to accurately
reflect what's stated in the docs.

generators/chipyard/src/main/scala/config/HeteroConfigs.scala

@@ -20,16 +20,23 @@ class HwachaLargeBoomAndHwachaRocketConfig extends Config(
   new chipyard.config.AbstractConfig)
 // DOC include end: BoomAndRocketWithHwacha
 
-// DOC include start: DualBoomAndRocketOneHwacha
 class LargeBoomAndHwachaRocketConfig extends Config(
   new chipyard.config.WithMultiRoCC ++                                  // support heterogeneous rocc
   new chipyard.config.WithMultiRoCCHwacha(1) ++                         // put hwacha on hart-1 (rocket)
   new hwacha.DefaultHwachaConfig ++                                     // set default hwacha config keys
   new boom.common.WithNLargeBooms(1) ++                                 // add 1 boom core
   new freechips.rocketchip.subsystem.WithNBigCores(1) ++                // add 1 rocket core
   new chipyard.config.AbstractConfig)
-// DOC include end: DualBoomAndRocketOneHwacha
 
+// DOC include start: DualBoomAndRocketOneHwacha
+class DualLargeBoomAndHwachaRocketConfig extends Config(
+  new chipyard.config.WithMultiRoCC ++                                  // support heterogeneous rocc
+  new chipyard.config.WithMultiRoCCHwacha(2) ++                         // put hwacha on hart-2 (rocket)
+  new hwacha.DefaultHwachaConfig ++                                     // set default hwacha config keys
+  new boom.common.WithNLargeBooms(2) ++                                 // add 2 boom cores
+  new freechips.rocketchip.subsystem.WithNBigCores(1) ++                // add 1 rocket core
+  new chipyard.config.AbstractConfig)
+// DOC include end: DualBoomAndRocketOneHwacha
 
 class DualLargeBoomAndDualRocketConfig extends Config(
   new boom.common.WithNLargeBooms(2) ++                   // add 2 boom cores