fix task docs and indexing service img

docs/_graphics/indexing_service.dot

@@ -27,7 +27,7 @@ digraph g {
   
   subgraph cluster_mm1 {
     style="dotted"
-    mm1 [shape = "box" label = "Middle Manager" ]
+    mm1 [shape = "box" label = "Middle Manager 1" ]
     peon_11[label = "peon"]
     peon_12[label = "peon"]
     peon_13[label = "peon"]

docs/content/Tasks.md

@@ -72,7 +72,9 @@ The Hadoop Index Task is used to index larger data sets that require the paralle
 |property|description|required?|
 |--------|-----------|---------|
 |type|The task type, this should always be "index_hadoop".|yes|
-|config|See [Batch Ingestion](Batch-ingestion.html)|yes|
+|config|A Hadoop Index Config. See [Batch Ingestion](Batch-ingestion.html)|yes|
+|hadoopCoordinates|The Maven <groupId>:<artifactId>:<version> of Hadoop to use. The default is "org.apache.hadoop:hadoop-core:1.0.3".|no|
+
 
 The Hadoop Index Config submitted as part of an Hadoop Index Task is identical to the Hadoop Index Config used by the `HadoopBatchIndexer` except that three fields must be omitted: `segmentOutputPath`, `workingPath`, `updaterJobSpec`. The Indexing Service takes care of setting these fields internally.