Bug 1587491 - Update DAMP try command documentation r=nchevobbe

Differential Revision: https://phabricator.services.mozilla.com/D48720

--HG--
extra : moz-landing-system : lando

devtools/docs/contributing/performance.md

@@ -135,8 +135,8 @@ For example, if the test is 50% faster, maybe you broke the performance test.
 This might happen if the test no longer waits for all the operations to finish executing before completing.
 
 To push your current patch to try, execute:
-```
-./mach try -b o -p linux64 -u none -t damp --rebuild-talos 5 --artifact
+```bash
+./mach try fuzzy --query "'linux64/ 'damp" --rebuild 5 --artifact
 ```
 It will print in your Terminal a link to perfherder like this one:
 [https://treeherder.mozilla.org/perf.html#/comparechooser?newProject=try&newRevision=9bef6cb13c43bbce21d40ffaea595e082a4c28db](https://treeherder.mozilla.org/perf.html#/comparechooser?newProject=try&newRevision=9bef6cb13c43bbce21d40ffaea595e082a4c28db)

devtools/docs/tests/performance-tests.md

@@ -48,7 +48,7 @@ to focus on just one subtest run:
 ## How to run it on try?
 
 ```bash
-./mach try -b o -p linux64 -u none -t damp --rebuild-talos 6
+./mach try fuzzy --query "'linux64/ 'damp" --rebuild 6 --artifact
 ```
 * Linux appears to build and run quickly, and offers quite stable results over the other OSes.
 The vast majority of performance issues for DevTools are OS agnostic, so it doesn't really matter which one you run them on.