Add tags (#1098)

* Add tags

* Update two_trains_meet.clj

* Update vowels_to_numbers.clj

Author: solar05

src/battle_asserts/issues/title_string.clj

@@ -5,7 +5,7 @@
 
 (def level :elementary)
 
-(def tags ["collections" "strings"])
+(def tags ["collections" "strings" "training"])
 
 (def description
   {:en "Check if a string `title` is a title string or not. A title string is one which has all the words in the string start with an upper case letter."

src/battle_asserts/issues/two_trains_meet.clj

@@ -4,7 +4,7 @@
 
 (def level :elementary)
 
-(def tags ["physics"])
+(def tags ["physics" "training"])
 
 (def description
   {:en "Compute how long after their deparature two trains will meet. Assume that the trains travel between two points, along a single section of track, going in opposite directions. The function should consume the trains' speeds and the starting distance between the trains."

src/battle_asserts/issues/vowels_to_numbers.clj

@@ -5,7 +5,7 @@
 
 (def level :elementary)
 
-(def tags ["strings"])
+(def tags ["strings" "training"])
 
 (def description
   {:en "In a given word array, replace the vowels in each word with their indexes.