DOCS-169 structural and formating edits to rta: pre-aggregated repots

Author: Sam Kleinman

source/applications.txt

@@ -37,7 +37,7 @@ Use Cases
    :maxdepth: 1
 
    applications/use-cases/real-time-analytics-storing-log-data
-   applications/use-cases/real-time-analytics-preaggregated-reports
+   applications/use-cases/real-time-analytics-pre-aggregated-reports
    applications/use-cases/real-time-analytics-hierarchical-aggregation
    applications/use-cases/ecommerce-product-catalog
    applications/use-cases/ecommerce-inventory-management

source/applications/use-cases/index.txt

@@ -12,7 +12,7 @@ Real time Analytics
    :maxdepth: 2
 
    real-time-analytics-storing-log-data
-   real-time-analytics-preaggregated-reports
+   real-time-analytics-pre-aggregated-reports
    real-time-analytics-hierarchical-aggregation
 
 E-Commerce