BSim: Add missing verb to docs

Author: gemesa

Ghidra/Features/BSim/src/main/help/help/topics/BSim/DatabaseConfiguration.html

@@ -978,7 +978,7 @@ <H3 class="title"><A name="ExeCat"></A>Executable Categories</H3>
           </DIV>
 
           <P>The single time-stamp field can be renamed by appending the keyword "date" to the
-          command after the name of the category. Once a category, the corresponding program
+          command after the name of the category. Once a category is added, the corresponding program
           options set for any new executables will automatically read into the database as part of
           the ingest process. Previously ingested executables, assuming they have the new program
           options set, can be updated within the BSim database using one of the <SPAN class=