Remove colons in filename

bboc.tex

@@ -64,10 +64,10 @@ This is the inside of the cover. We could put stuff here.
 \input{02_Servile_economy_and_capitalism}
 \input{03_Shoot,_theyre_just_proles}
 \input{04_1744-1849,_A_Lyons_century}
-\input{05_1871:_Class_Betrayal_and_Bloody_Week}
+\input{05_1871_Class_Betrayal_and_Bloody_Week}
 \input{06_Union_Busting}
 \input{07_The_armed_gangs_of_Capital_in_Rep._France}
-\input{08_The_Great_War:_24,500_casualties_per_day}
+\input{08_The_Great_War_24,500_casualties_per_day}
 \input{09_Interventions_in_Russia_1917-1921}
 \input{10_World_war_two}
 \input{11_Of_the_origin_of_wars}