Change a symbol name to avoid conflict in 6.06

Author: dz-cies

06_databases/6-06_indexing-with-elasticsearch.asciidoc

@@ -130,7 +130,7 @@ cause a document ID to be generated automatically:
 
 (esi/create "test4" :mappings mapping-types)
 
-(def doc {:username "happyjoe"
+(def doc1 {:username "happyjoe"
           :first-name "Joe"
           :last-name "Smith"
           :age 30
@@ -139,7 +139,7 @@ cause a document ID to be generated automatically:
           :biography "N/A"})
 
 
-(esd/create "test4" "person" doc)
+(esd/create "test4" "person" doc1)
 ;; => {:created true, :_index "test4", :_type "person",
 ;;     :_id "2vr8sP-LTRWhSKOxyWOi_Q", :_version 1}
 ----
@@ -148,7 +148,7 @@ cause a document ID to be generated automatically:
 
 [source,clojure]
 ----
-(esr/put "test4" "person" "happyjoe" doc)
+(esr/put "test4" "person" "happyjoe" doc1)
 ----
 
 ==== Discussion