SearchResult: MW version number should be a string in wfDeprecated call

Seems this was a typo and I think 1.32 which is a double/float will be
implicitly converted to true (bool) because it will resolve 1.32 to 1 as
integer and then 1 which maps to true (bool).

To avoid this, use '1.32' instead of the integer form of the version.

Change-Id: I2420396e110284f582cd79820ffc6064e247b4b9