Rename Bloomberg LP (Black).png to Bloomberg-LP-(Black).png

Reviewed-by: Anton Arapov <anton@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Mark J. Cox <mark@awe.com>
(Merged from https://github.com/openssl/web/pull/472)

diff --git a/img/Bloomberg LP (Black).png b/img/Bloomberg-LP-(Black).png
similarity index 100%
rename from img/Bloomberg LP (Black).png
rename to img/Bloomberg-LP-(Black).png