Updated url to Code of Conduct page (facebook#13126)

Hilbrand · gaearon · commit bf32a3d19582 · 2018-06-29T13:27:24.000+01:00
url is not working. Did a search on code.fb.com that returned the page I've put in the commit.
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
@@ -1,3 +1,3 @@
 # Code of Conduct
 
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.facebook.com/pages/876921332402685/open-source-code-of-conduct) so that you can understand what actions will and will not be tolerated.
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,3 @@`
`1`	`1`	`# Code of Conduct`
`2`	`2`
`3`		`-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.facebook.com/pages/876921332402685/open-source-code-of-conduct) so that you can understand what actions will and will not be tolerated.`
	`3`	`+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.`