minor typos/errata for correction consideration

[SCMCarroll]

7.3 verbiage implies second reference is needed "MUST include the extension definition's UUID that defines the extension definition object and the extension_type property as defined in section 2.2"

9.2 word section was missing in reference under float
"defined in 2"

12.7.1 ● Single Observation Expressions (omitting Qualifiers), as described in section section [9.4] ....repeat word "section" and ref wrong section seems it should be 9.5

12.7.2 ● Single and Compound Observation Expressions (omitting Qualifiers) as described in section [9.4] f wrong section ref, seems it should be 9.5

12.7.2 ● The AND Observation Operator, as described in section [9.5] should be 9.5.2

● The OR Observation Operator, as described in section [9.5] should be 9.5.2

● All Comparison Operators, as described in section [9.6] should be 9.6.1