fb: H1 as table header

Facebook/command_line_cheat_sheet.md

@@ -1,5 +1,4 @@
-# Mercurial
-|
+# Mercurial |
 -|-
 hg book <bookmark name>         | temporary branch
 hg pull/hg rebase -d master     | git pull --rebase
@@ -7,28 +6,25 @@ hg revert <file>                | git co -f <file>
 hg commit                       | git ci
 
 
-# Jelly Fish
-|
+# Jelly Fish |
 -|-
 jf apply --all --suggested [--dry-run]      | apply suggested changes
 jf apply --accepted --suggested [--dry-run] | apply accepted changes
 jf submit -e                                | sumbit and edit a comment
 
-# Buck
-|
+# Buck |
 -|-
 buck test @mode/dev-nosan local/path/... | run all tests
 
 
-# On deman DB
-|
+# On deman DB |
 -|-
 ondemand devdb new              | new dev DB
 ondemand devdb list             | list dev DBs
 ondemand devdb connect --name <name of the ephemeral xdb shard> | connect to dev DB
 
-# MySQL
-SHOW DATABASES;                 |
+# MySQL |
 -|-
+SHOW DATABASES;                 |
 SHOW DATABASES LIKE 'open%';    |
 SHOW SCHEMAS;                   |