chore(echidna-manifest.txt): use & instead of ;

Marcos Cáceres · web-flow · commit 3b5bf18da77a · 2019-05-22T14:09:01.000+10:00
diff --git a/echidna-manifest.txt b/echidna-manifest.txt
@@ -1,2 +1,2 @@
-index.html?specStatus=WD;shortName=push-api respec
+index.html?specStatus=WD&shortName=push-api respec
 sequence_diagram.png

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`		`-index.html?specStatus=WD;shortName=push-api respec`
	`1`	`+index.html?specStatus=WD&shortName=push-api respec`
`2`	`2`	`sequence_diagram.png`