pgsql: Doc: Fix type of some storage parameters in CREATE TABLE page

Doc: Fix type of some storage parameters in CREATE TABLE page

autovacuum_vacuum_scale_factor and autovacuum_analyze_scale_factor have
been documented as "float4", but "floating type" is used in this case
for GUCs and relation options in the documentation.

Author: Atsushi Torikoshi
Discussion: https://postgr.es/m/CACZ0uYFf_p9BpbjLccx3CA=eM1Hk2Te=ULY4iptGLUhL-JxCPA@mail.gmail.com
Backpatch-through: 9.5

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/d2159c677812e60bcc43222a8297ca2103821314

Modified Files
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doc/src/sgml/ref/create_table.sgml | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)