Correct chords position and add specific chords for the bridge.

songs/Linkin_Park/Numb.sg

@@ -7,6 +7,7 @@
 \gtab{Do}{X32010}
 \gtab{Sol}{320003}
 \gtab{Ré}{XX0232}
+\gtab{Sim}{2:X02220}
 
 \beginverse
 \[Mim]I'm tired of being what you \[Do]want me to be
@@ -21,7 +22,7 @@ Every s\[Mim]tep I take is a\[Sol]nother mistake to \[Do]you \[Ré]
 \beginchorus
 \[Mim]I've become so nu\[Do]mb I can't feel you t\[Sol]here
 I've become so ti\[Ré]red so much more \[Mim]aware
-I've becoming this \[Do]all I want to \[Sol]do
+I've becoming \[Do]this all I want to \[Sol]do
 Is be more like \[Ré]me and be less like \[Mim]you
 \endchorus
 
@@ -37,10 +38,10 @@ And every second I waste is more than I can take
 \endverse
 
 \beginverse*
-And I know
-I may end up failing too
-But I know
-You were just like me with someone disappointed in you
+And I \[Ré]know
+I may \[Mim]end \[Sol]up \[Mim]fail\[Ré]ing \[Do]too
+But I \[Ré]know
+You were j\[Si]ust like me with someone disappointed in you
 \endverse
 
 \beginverse*