DOCS-10373 fix quotes (#122)

Author: terakilobyte

docs/tutorials/bson-v3.txt

@@ -58,7 +58,7 @@ you wish to instantiate and passing it the ``StringIO`` bytes.
   Int32.from_bson(string_io)
 
 Core Ruby objects that are represented in the BSON specification and
-have a ``to_bson`` method defined for them are: 
+have a ``to_bson`` method defined for them are:
 
 - ``Object``
 - ``Array``
@@ -86,7 +86,7 @@ a subtype when constructing.
 
   BSON::Binary.new(binary_data, :md5)
 
-Valid subtypes are: 
+Valid subtypes are:
 
 - ``:generic``
 - ``:function``
@@ -188,7 +188,7 @@ them.
      - ``{ "$binary" : "\x01", "$type" : "md5" }``
 
    * - ``BSON::Code``
-     - ``{ "$code" : "this.v = 5 }``
+     - ``{ "$code" : "this.v = 5" }``
 
    * - ``BSON::CodeWithScope``
      - ``{ "$code" : "this.v = value", "$scope" : { v => 5 }}``

docs/tutorials/bson-v4.txt

@@ -248,7 +248,7 @@ them.
      - ``{ "$binary" : "\x01", "$type" : "md5" }``
 
    * - ``BSON::Code``
-     - ``{ "$code" : "this.v = 5 }``
+     - ``{ "$code" : "this.v = 5" }``
 
    * - ``BSON::CodeWithScope``
      - ``{ "$code" : "this.v = value", "$scope" : { v => 5 }}``