Update brainstorming.md

Author: galli-leo

mappings/brainstorming.md

@@ -1,6 +1,6 @@
 ## Possible DB Layout
 
-Master Table:
+### Master Table:
 
 | id | tmdbid | imdbid | report_count | total_reports | locked  |
 |---|----|----|---|---|---|
@@ -9,7 +9,7 @@ Master Table:
 | 3 | 11     | tt000011 |  -5         | 10  | true   |
 | 4 | 2     | tt000002 | 4            | 50 | false  |
 
-Title Mappings:
+### Title Mappings:
 
 | mappingsid (Foreign Key) | aka_title | aka_clean_title |
 |----------|---------------------|---------|
@@ -19,15 +19,15 @@ Title Mappings:
 
 **Note:** Clean title is used to ensure that only one mapping per aka_title exists (should be unique). It also should help mapping with e.g. files.
 
-Year Mappings:
+### Year Mappings:
 
 | mappingsid (Foreign Key) | aka_year |
 |----------|----------|
 | 3 | 1978     |
 | 4 | 1999     | 
 |          |              |
 
-Meta Table:
+### Meta Table:
 
 | mappingsid (Foreign Key) | Event Type | Date |
 |----|----|----|