Fix namespace of PageRank in the docs

Co-Authored-By: Max Kießling <[email protected]>

Author: breakanalysis

doc/asciidoc/management-ops/graph-catalog.adoc

@@ -99,7 +99,7 @@ After creating the graphs in the catalog, we can refer to them in algorithms by
 .Run Page Rank on one of our created graphs:
 [source,cypher]
 ----
-CALL gds.algo.pageRank.stream('my-native-graph') YIELD nodeId, score;
+CALL gds.pageRank.stream('my-native-graph') YIELD nodeId, score;
 ----
 
 [[catalog-graph-list]]