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/general/#

@@ -1,4 +1,4 @@
-#name : # =>
+# name: # =>
 # key: #
 # --
 # => 

snippets/ruby-mode/general/=b

@@ -1,4 +1,4 @@
-#name : =begin rdoc ... =end
+# name: =begin rdoc ... =end
 # key: =b
 # --
 =begin rdoc

snippets/ruby-mode/general/app

@@ -1,4 +1,4 @@
-#name : if __FILE__ == $PROGRAM_NAME ... end
+# name: if __FILE__ == $PROGRAM_NAME ... end
 # key: app
 # --
 if __FILE__ == $PROGRAM_NAME

snippets/ruby-mode/general/bm

@@ -1,4 +1,4 @@
-#name : Benchmark.bmbm(...) do ... end
+# name: Benchmark.bmbm(...) do ... end
 # key: bm
 # --
 Benchmark.bmbm(${1:10}) do |x|

snippets/ruby-mode/general/case

@@ -1,4 +1,4 @@
-#name : case ... end
+# name: case ... end
 # key: case
 # --
 case ${1:object}

snippets/ruby-mode/general/dee

@@ -1,4 +1,4 @@
-#name : deep_copy(...)
+# name: deep_copy(...)
 # key: dee
 # --
 Marshal.load(Marshal.dump($0))

snippets/ruby-mode/general/rb

@@ -1,4 +1,4 @@
-#name : /usr/bin/ruby -wKU
+# name: /usr/bin/ruby -wKU
 # key: rb
 # --
 #!/usr/bin/ruby -wKU

snippets/ruby-mode/general/req

@@ -1,4 +1,4 @@
-#name : require "..."
+# name: require "..."
 # key: req
 # --
 require "$0"

snippets/ruby-mode/general/rreq

@@ -1,4 +1,4 @@
-#name : require File.join(File.dirname(__FILE__), ...)
+# name: require File.join(File.dirname(__FILE__), ...)
 # key: rreq
 # --
 require File.join(File.dirname(__FILE__), $0)

snippets/ruby-mode/general/y

@@ -1,4 +1,4 @@
-#name : :yields: arguments (rdoc)
+# name: :yields: arguments (rdoc)
 # key: y
 # --
 :yields: $0