doc(build.go): add an explanatory comment

Aaron Schlesinger · Aaron Schlesinger · commit 0e75b6dea1a8 · 2016-01-13T14:02:59.000-08:00
for the short sha index constant
diff --git a/pkg/gitreceive/build.go b/pkg/gitreceive/build.go
@@ -17,6 +17,7 @@ import (
 )
 
 const (
+	// this constant represents the length of a shortened git sha - 8 characters long
 	shortShaIdx = 8
 )
 

Original file line number	Diff line number	Diff line change
`@@ -17,6 +17,7 @@ import (`
`17`	`17`	`)`
`18`	`18`
`19`	`19`	`const (`
	`20`	`+ // this constant represents the length of a shortened git sha - 8 characters long`
`20`	`21`	`shortShaIdx = 8`
`21`	`22`	`)`
`22`	`23`