doc(decision-tree): update operator/function names (ReactiveX#3912)

ReactiveX#3900

doc/decision-tree-widget/tree.yml

@@ -15,7 +15,7 @@ children:
       - label: pluck
     - label: I want to spy the values being emitted without affecting them
       children:
-      - label: do
+      - label: tap
     - label: I want to allow some values to pass
       children:
       - label: based on custom logic
@@ -241,9 +241,9 @@ children:
       - label: and recursively start a new Observable for each new value
         children:
         - label: expand
-    - label: I want to perform custom operations without breaking the chained calls API
+    - label: I want to perform custom operations
       children:
-      - label: let
+      - label: pipe
     - label: I want to share a subscription between multiple subscribers
       children:
       - label: using a conventional Subject
@@ -266,14 +266,11 @@ children:
       - label: using a specific subject implementation
         children:
         - label: multicast
-      - label: and make it behave like a cache
-        children:
-        - label: cache
     - label: when an error occurs
       children:
       - label: I want to start a new Observable
         children:
-        - label: catch
+        - label: catchError
       - label: I want to re-subscribe
         children:
         - label: immediately
@@ -297,7 +294,7 @@ children:
         - label: concat
     - label: when it completes, errors or unsubscribes, I want to execute a function
       children:
-      - label: finally
+      - label: finalize
     - label: I want to change the scheduler
       children:
       - label: that routes calls to subscribe
@@ -329,84 +326,84 @@ children:
     children:
     - label: I want to receive values only from the Observable that emits a value first
       children:
-      - label: Observable.race
+      - label: race
     - label: I want to be notified when all of them have completed
       children:
-      - label: Observable.forkJoin
+      - label: forkJoin
     - label: I want to output the values from either of them
       children:
-      - label: Observable.merge
+      - label: merge
     - label: I want to output a value computed from values of the source Observables
       children:
       - label: using the latest value of each source whenever any source emits
         children:
-        - label: Observable.combineLatest
+        - label: combineLatest
       - label: using each source value only once
         children:
-        - label: Observable.zip
+        - label: zip
     - label: I want to subscribe to each in order
       children:
-      - label: Observable.concat
+      - label: concat
   - label: 'I have no Observables yet, and'
     children:
     - label: I want to create a new Observable
       children:
       - label: using custom logic
         children:
-        - label: Observable.create
+        - label: new Observable()
       - label: using a state machine similar to a for loop
         children:
-        - label: Observable.generate
+        - label: generate
       - label: that throws an error
         children:
-        - label: Observable.throw
+        - label: throwError
       - label: that just completes, without emitting values
         children:
-        - label: Observable.empty
+        - label: empty
       - label: that never emits anything
         children:
-        - label: Observable.never
+        - label: never
       - label: from an existing source of events
         children:
         - label: coming from the DOM or Node.js or similar
           children:
-          - label: Observable.fromEvent
+          - label: fromEvent
         - label: that uses an API to add and remove event handlers
           children:
-          - label: Observable.fromEventPattern
+          - label: fromEventPattern
       - label: from an ES6 Promise
         children:
-        - label: Observable.fromPromise
+        - label: fromPromise
       - label: from a Promise or an event source or an array
         children:
-        - label: Observable.from
+        - label: from
       - label: that iterates
         children:
         - label: over the values in an array
           children:
-          - label: Observable.fromArray
+          - label: fromArray
         - label: over values in a numeric range
           children:
-          - label: Observable.range
+          - label: range
         - label: over prefined values given as arguments
           children:
-          - label: Observable.of
+          - label: of
       - label: that emits values on a timer
         children:
         - label: regularly
           children:
-          - label: Observable.interval
+          - label: interval
         - label: with an optional initial delay
           children:
-          - label: Observable.timer
+          - label: timer
       - label: which is built on demand when subscribed
         children:
-        - label: Observable.defer
+        - label: defer
     - label: I want to convert a callback to an Observable
       children:
       - label: supporting a conventional callback API
         children:
-        - label: Observable.bindCallback
+        - label: bindCallback
       - label: supporting Node.js callback style API
         children:
-        - label: Observable.bindNodeCallback
+        - label: bindNodeCallback