update func comment (#981)

tree.go

@@ -357,7 +357,7 @@ func (n *node) insertChild(numParams uint8, path string, fullPath string, handle
 	n.handlers = handlers
 }
 
-// Returns the handle registered with the given path (key). The values of
+// getValue returns the handle registered with the given path (key). The values of
 // wildcards are saved to a map.
 // If no handle can be found, a TSR (trailing slash redirect) recommendation is
 // made if a handle exists with an extra (without the) trailing slash for the
@@ -499,7 +499,7 @@ walk: // Outer loop for walking the tree
 	}
 }
 
-// Makes a case-insensitive lookup of the given path and tries to find a handler.
+// findCaseInsensitivePath makes a case-insensitive lookup of the given path and tries to find a handler.
 // It can optionally also fix trailing slashes.
 // It returns the case-corrected path and a bool indicating whether the lookup
 // was successful.