Keep snippet vars definitions in a single format across all snippets and documentation.

The format is:

# var-name: value

Previously snippets used a mixture of the following formatting:

#var-name: value
#var-name : value
# var-name: value
# var-name : value

snippets/ruby-mode/control structure/forin

@@ -1,4 +1,4 @@
-#name : for ... in ...; ... end
+# name: for ... in ...; ... end
 # key: forin
 # --
 for ${1:element} in ${2:collection}

snippets/ruby-mode/control structure/if

@@ -1,4 +1,4 @@
-#name : if ... end
+# name: if ... end
 # key: if
 # --
 if ${1:condition}

snippets/ruby-mode/control structure/ife

@@ -1,4 +1,4 @@
-#name : if ... else ... end
+# name: if ... else ... end
 # key: ife
 # --
 if ${1:condition}

snippets/ruby-mode/control structure/tim

@@ -1,4 +1,4 @@
-#name : times { |n| ... }
+# name: times { |n| ... }
 # key: tim
 # --
 times { |${n}| $0 }

snippets/ruby-mode/control structure/until

@@ -1,4 +1,4 @@
-#name : until ... end
+# name: until ... end
 # key: until
 # --
 until ${condition}

snippets/ruby-mode/control structure/upt

@@ -1,4 +1,4 @@
-#name : upto(...) { |n| ... }
+# name: upto(...) { |n| ... }
 # key: upt
 # --
 upto(${n}) { |${i}|

snippets/ruby-mode/control structure/when

@@ -1,4 +1,4 @@
-#name : when ... end
+# name: when ... end
 # key: when
 # --
 when ${condition}

snippets/ruby-mode/control structure/while

@@ -1,4 +1,4 @@
-#name : while ... end
+# name: while ... end
 # key: while
 # --
 while ${condition}