Fix Absil's paper on retractions

Author: sblelong

bibliography.bib

@@ -83,7 +83,7 @@ @book{Clarke_1990
 @article{AbsMal12,
   Author        = {P.A. Absil and J. Malick},
   Title         = {{Projection-like Retractions on Matrix Manifolds}},
-  Journal       = {Projection-like Retractions on Matrix Manifolds},
+  Journal       = {SIAM Journal on Optimization},
   Volume        = {22},
   Number        = {1},
   Pages         = {135-158},