Some more white-space capitalization fixing in the yamls

nomad-query/nomad-query.demoinfo.yaml

@@ -4,7 +4,7 @@
 "attributes": {
 "title": "Querying and visualizing the content of the NOMAD Archive",
 "logicalPath": "/data/shared/tutorialsNew/nomad-query/nomad-query.bkr",
-"authors": ["Regler, Benjamin ", "Sastre, Alfonso", "Mohamed, Fawzi ", "Ghiringhelli, Luca"],
+"authors": ["Regler, Benjamin", "Sastre, Alfonso", "Mohamed, Fawzi", "Ghiringhelli, Luca"],
 "editLink": "/notebook-edit/data/shared/tutorialsNew/nomad-query/nomad-query.bkr",
 "isPublic": true,
 "username": "tutorialsNew",

sisso/sisso-metal-nonmetal.demoinfo.yaml

@@ -4,7 +4,7 @@
 "attributes": {
 "title": "Predicting the metal-insulator classification of elements and binary systems",
 "logicalPath": "/data/shared/tutorialsNew/sisso/sisso-metal-nonmetal.bkr",
-"authors": ["Ahmetcik, Emre", "Ziletti, Angelo", "Ouyang, Runhai", "Ghiringhelli, Luca", "Scheffler", Matthias],
+"authors": ["Ahmetcik, Emre", "Ziletti, Angelo", "Ouyang, Runhai", "Ghiringhelli, Luca", "Scheffler, Matthias"],
 "editLink": "/notebook-edit/data/shared/tutorialsNew/sisso/sisso-metal-nonmetal.bkr",
 "isPublic": true,
 "username": "tutorialsNew",

soap-similiarity/SOAP_similarity.demoinfo.yaml

@@ -18,7 +18,7 @@
 	"category" : ["Demo"],
 	"platform" :  ["beaker"],
 	"language" :  ["python", "javascript"],
-	"data_analytics_method" : ["SOAP", "Global Similarity", "Glosim", "Kernel Principal-Component Analysis", "Kernel PCA", "MultiDimensional scaling", "MDS"],
+	"data_analytics_method" : ["SOAP", "Global Similarity", "Glosim", "Kernel Principal-Component Analysis", "Kernel PCA", "MultiDimensional Scaling", "MDS"],
 	"application_section" : ["Crystal structure prediction"],
 	"application_keyword":  ["Octet binaries", "GDB molecular database"], 
 	"application_system" : ["Rock salt", "Zinc blende", "GDB7"],