Corrections to the Guide to UI programming with coroutines (mostly typos)
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-01.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-01.kt
index 58255ac..b1def37 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-01.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-01.kt
@@ -72,10 +72,10 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     onMouseClicked = EventHandler { event ->
         launch(UI) {
-            block(event)
+            action(event)
         }
     }
 }
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-02.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-02.kt
index 906b57a..eaa8bf9 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-02.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-02.kt
@@ -72,10 +72,10 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     // launch one actor to handle all events on this node
     val eventActor = actor<MouseEvent>(UI) {
-        for (event in channel) block(event) // pass event to block
+        for (event in channel) action(event) // pass event to action
     }
     // install a listener to offer events to this actor
     onMouseClicked = EventHandler { event ->
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-03.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-03.kt
index 7ef31f2..9dde39f 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-03.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-actor-03.kt
@@ -72,10 +72,10 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     // launch one actor to handle all events on this node
     val eventActor = actor<MouseEvent>(UI, capacity = Channel.CONFLATED) { // <--- Changed here
-        for (event in channel) block(event) // pass event to block
+        for (event in channel) action(event) // pass event to action
     }
     // install a listener to offer events to this actor
     onMouseClicked = EventHandler { event ->
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-01.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-01.kt
index 3ceaecb..a0036cd 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-01.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-01.kt
@@ -62,9 +62,9 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     val eventActor = actor<MouseEvent>(UI, capacity = Channel.CONFLATED) {
-        for (event in channel) block(event) // pass event to block
+        for (event in channel) action(event) // pass event to action
     }
     onMouseClicked = EventHandler { event ->
         eventActor.offer(event)
@@ -84,7 +84,7 @@
             delay(100) // update the text every 100ms
         }
     }
-    // compute next fibonacci number of each click
+    // compute the next fibonacci number of each click
     var x = 1
     fab.onClick {
         result = "fib($x) = ${fib(x)}"
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-02.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-02.kt
index ac24f0a..62cd354 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-02.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-02.kt
@@ -62,9 +62,9 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     val eventActor = actor<MouseEvent>(UI, capacity = Channel.CONFLATED) {
-        for (event in channel) block(event) // pass event to block
+        for (event in channel) action(event) // pass event to action
     }
     onMouseClicked = EventHandler { event ->
         eventActor.offer(event)
diff --git a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-03.kt b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-03.kt
index de041ee..01deb6f 100644
--- a/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-03.kt
+++ b/ui/kotlinx-coroutines-javafx/src/test/kotlin/guide/example-ui-blocking-03.kt
@@ -62,9 +62,9 @@
     }
 }
 
-fun Node.onClick(block: suspend (MouseEvent) -> Unit) {
+fun Node.onClick(action: suspend (MouseEvent) -> Unit) {
     val eventActor = actor<MouseEvent>(UI, capacity = Channel.CONFLATED) {
-        for (event in channel) block(event) // pass event to block
+        for (event in channel) action(event) // pass event to action
     }
     onMouseClicked = EventHandler { event ->
         eventActor.offer(event)