docs/gitcredentials: further describe path prefix

Record that path prefix matching requires the pattern to also include
protocol and host.

Signed-off-by: M Hickford <[email protected]>

Author: hickford

Documentation/gitcredentials.adoc

@@ -166,10 +166,11 @@ the domain name and other pattern matching techniques as with the `http.<URL>.*`
 options.
 
 If the "pattern" URL does include a path component, then this must match
-as a prefix path: the context `https://example.com/bar` will match a config
+as a path prefix: the context `https://example.com/bar` will match a config
 entry for `https://example.com/bar/baz.git` but will not match a config entry for
 `https://example.com/other/repo.git` or `https://example.com/barry/repo.git`
-(even though it is a string prefix).
+(even though it is a string prefix). To match as a prefix, the pattern
+must include protocol and host.
 
 
 CONFIGURATION OPTIONS