[FIX] doc: Truncate 680-line example data

The page shows the first 15 lines of a CSV in raw form as an example.
Next it shows the same data rendered as a table. However, it was
displaying the entire 680-line source data. `csv-table` doesn't have a
`:lines:` directive. I copied and truncated the original file for use
in the documentation.

X-original-commit: 04d4ec33043627747e36730953479557aae278f2

doc/reference/static/res.country.state.csv

@@ -0,0 +1,15 @@
+"id","country_id:id","name","code"
+state_au_1,au,"Australian Capital Territory","ACT"
+state_au_2,au,"New South Wales","NSW"
+state_au_3,au,"Northern Territory","NT"
+state_au_4,au,"Queensland","QLD"
+state_au_5,au,"South Australia","SA"
+state_au_6,au,"Tasmania","TAS"
+state_au_7,au,"Victoria","VIC"
+state_au_8,au,"Western Australia","WA"
+state_us_1,us,"Alabama","AL"
+state_us_2,us,"Alaska","AK"
+state_us_3,us,"Arizona","AZ"
+state_us_4,us,"Arkansas","AR"
+state_us_5,us,"California","CA"
+state_us_6,us,"Colorado","CO"