computer_memory_storage: fix indicator titles

etl/steps/data/garden/technology/2024-05-13/computer_memory_storage.meta.yml

@@ -13,14 +13,14 @@ tables:
   computer_memory_storage:
     variables:
       ddrives:
-        title: Historical price of memory
+        title: Historical price of disk drives
         unit: "current US$ per terabyte"
         short_unit: "$/TB"
         description_from_producer: "In general, these are the lowest priced disk drives for which I found prices at the time. The floppy drives are not the lowest price per capacity. Floppies are included because they set a low unit price, making disk drives accessible to the masses."
         display:
           numDecimalPlaces: 0
       flash:
-        title: Historical price of memory
+        title: Historical price of flash memory
         unit: "current US$ per terabyte"
         short_unit: "$/TB"
         description_from_producer: "Flash memory provides a solid state alternative to disk drives, although at a greater cost per megabyte. In general, these are the lowest priced USB flash memory devices I could find. I have stopped recording separate flash prices, since SSDs are now the best source of flash memory prices."
@@ -33,7 +33,7 @@ tables:
         display:
           numDecimalPlaces: 0
       ssd:
-        title: Historical price of memory
+        title: Historical price of solid-state drives
         unit: "current US$ per terabyte"
         short_unit: "$/TB"
         description_from_producer: "Flash memory provides a solid state alternative to disk drives, although at a greater cost per megabyte. In general, these are the lowest priced USB flash memory devices I could find. I have stopped recording separate flash prices, since SSDs are now the best source of flash memory prices."