First pass at updating all documentation formatting and cleaning up output of examples (#2031)

docs/commands/uniq.md

@@ -6,7 +6,7 @@ Returns unique rows or values from a dataset.
 
 Given a file `test.csv`
 
-```
+```csv
 first_name,last_name,rusty_at,type
 Andrés,Robalino,10/11/2013,A
 Andrés,Robalino,10/11/2013,A
@@ -14,7 +14,7 @@ Jonathan,Turner,10/12/2013,B
 Yehuda,Katz,10/11/2013,A
 ```
 
-```
+```shell
 > `open test.csv | uniq`
 ━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━
  # │ first_name │ last_name │ rusty_at   │ type
@@ -25,10 +25,10 @@ Yehuda,Katz,10/11/2013,A
 ━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━
 ```
 
-```
+```shell
 > `open test.csv | get type | uniq`
 ━━━┯━━━━━━━━━
- # │ <value>
+ # │
 ───┼─────────
  0 │ A
  1 │ B
@@ -36,14 +36,15 @@ Yehuda,Katz,10/11/2013,A
 ```
 
 ### Counting
+
 `--count` or `-c` is the flag to output a `count` column.
 
-```
+```shell
 > `open test.csv | get type | uniq -c`
 ───┬───────┬───────
- # │ value │ count 
+ # │ value │ count
 ───┼───────┼───────
- 0 │ A     │     3 
- 1 │ B     │     2 
+ 0 │ A     │     3
+ 1 │ B     │     2
 ───┴───────┴───────
-```
+```