do not capitalize intro/outro in musicnote environments

Alex_Beaupain/Je_n_aime_que_toi.sg

@@ -11,7 +11,7 @@
   \gtab{Sim}{2:X02210}
   \gtab{Fa#7}{2:020100}
 
-  \musicnote{Intro : Ré Fa{\shrp}m Mim La \rep{2}}
+  \musicnote{intro : Ré Fa{\shrp}m Mim La \rep{2}}
 
   \beginverse
     \[Ré]Petit salaud, ton \[Fa#m]jeu est clair

Alex_Beaupain/Les_yeux_au_ciel.sg

@@ -10,7 +10,7 @@
   \gtab{Do7/6}{X32200}
   \gtab{Do7}{X32000}
 
-  \musicnote{Intro : Lam Mi7sus4/Si Do7/6 Mi7sus4/Si \rep{2}}
+  \musicnote{intro : Lam Mi7sus4/Si Do7/6 Mi7sus4/Si \rep{2}}
 
   \beginverse
     \[Lam]Les yeux \[Mi7sus4]au \[Do6]ciel

Alex_Beaupain/Ma_memoire_sale.sg

@@ -9,7 +9,7 @@
   \gtab{Ré9+}{XX0230}
   \gtab{Mim}{022000}
   \gtab{Sim}{2:X02210}
-  \musicnote{Intro : Do9+ Mim Do9+ Mim}
+  \musicnote{intro : Do9+ Mim Do9+ Mim}
 
   \beginverse
     L\[Do9+]ave

Alicia_Keys/If_aint_got_you.sg

@@ -43,7 +43,7 @@
     Cares for me
   \endverse
 
-  %\musicnote{Outro (picking): Do7 Sim}
+  %\musicnote{outro (picking): Do7 Sim}
   \beginverse
     If I ain't \[Lam]got you with me baby \[Sol7]
     \[Sol7]So \[Lam]nothing in \[Sim]this \[Do7]whole wide world don't mean a \[Sim]thing

Gogol_Bordello/Oh_no.sg

@@ -10,7 +10,7 @@
   \gtab{Sol}{3:022100}
   \gtab{Ré}{5:X02220}
 
-  \musicnote{Intro: Mim}
+  \musicnote{intro: Mim}
 
   \beginverse
     Sometimes when facing common \[Si]trouble

Sheepbox/Not_scared_to_die.sg

@@ -15,7 +15,7 @@
   \gtab{Do}{X32010}
   \gtab{Mi7}{020100}
 
-  \musicnote{Intro: Do{\shrp}m Mim Sim La $\times 2$}
+  \musicnote{intro: Do{\shrp}m Mim Sim La $\times 2$}
 
   \beginverse
     \[Do#m]{I let you} drive\[Mim]{\dots{}} \[Sim]{Just for} a while\[La]{.}

The_Innocence_Mission/The_lakes_of_Canada.sg

@@ -11,7 +11,7 @@
   \gtab{Sol}{320003}
   \gtab{Lam}{X02210}
 
-  \musicnote{Intro: Rém Fa Do Sol \rep{2}}
+  \musicnote{intro: Rém Fa Do Sol \rep{2}}
 
   \beginverse
     \[Fa]Look for me another \[Do]day