Fix print statement in subtraction example (#1750)

Co-authored-by: Matthew Fishman <mtfishman@users.noreply.github.com>

Author: ericsherrill-made4net

Project.toml

@@ -1,6 +1,6 @@
 name = "ITensors"
 uuid = "9136182c-28ba-11e9-034c-db9fb085ebd5"
-version = "0.9.28"
+version = "0.9.29"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>", "Miles Stoudenmire <mstoudenmire@flatironinstitute.org>"]
 
 [workspace]

examples/basic_ops/basic_ops.jl

@@ -37,7 +37,7 @@ println("X =\n", X, "\n")
 println("Y =\n", Y, "\n")
 println("R = Z * X =\n", R, "\n")
 println("S = Y + X =\n", S, "\n")
-println("S = Y - X =\n", T, "\n")
+println("T = Y - X =\n", T, "\n")
 
 # Check that adding incompatible tensors cause an error
 try