[advanced][algorithms] Fix too long short description

Until recently the length of the short description
was not enforced. This has changed and thus these
algorithms would fail to install on the platform.

advanced/algorithms/username/gmm/1.json

 {
-  "description": "Implements the Universal Background Model (UBM) training ",
+  "description": "Implements the Universal Background Model (UBM) training",
   "language": "python",
   "splittable": false,
   "groups": [

advanced/algorithms/username/gmm_projection/1.json

 {
-  "description": "For a given set of feature vectors and a Gaussian Mixture Models (GMM), this algorithm implements the Maximum-a-posteriori (MAP) estimation",
+  "description": "For a given set of feature vectors and a GMM, this algorithm implements the MAP estimation",
   "language": "python",
   "splittable": true,
   "groups": [

advanced/algorithms/username/gmm_projection_string/1.json

 {
-  "description": "For a given set of feature vectors and a Gaussian Mixture Models (GMM), this algorithm implements the Maximum-a-posteriori (MAP) estimation",
+  "description": "For a given set of feature vectors and a GMM, this algorithm implements the MAP estimation",
   "language": "python",
   "splittable": true,
   "groups": [