[Specification] Update section titles for consistency in documentation

docs/spec/blocks/data.adoc

@@ -1,4 +1,4 @@
-=== The data block (`DBLK`)
+=== Data Block (`DBLK`)
 
 A data block encapsulates media-derived content and is composed of a header followed by either compressed or uncompressed data.
 

docs/spec/blocks/ddt.adoc

@@ -1,4 +1,4 @@
-=== The deduplication table (`DDT*`) *_DEPRECATED_*
+=== Deduplication Table (`DDT*`) *_DEPRECATED_*
 
 The deduplication table is a sequential array of pointers, with each entry corresponding to a sector on the storage media.
 These pointers map sector data to logical content blocks, enabling efficient elimination of duplicate data.

docs/spec/blocks/ddt2.adoc

@@ -1,4 +1,4 @@
-=== The deduplication table (`DDT2`)
+=== Deduplication Table (`DDT2`)
 
 The deduplication table is a multi-level table of pointers to LBAs contained in the image.
 It starts with the following header.

docs/spec/blocks/geom.adoc

@@ -1,4 +1,4 @@
-=== The geometry block (`GEOM`)
+=== Geometry Block (`GEOM`)
 
 The geometry block encapsulates metadata that defines the disk’s geometry, primarily to support transformations between CHS (Cylinder-Head-Sector) and LBA (Logical Block Addressing) addressing schemes.
 

docs/spec/blocks/index.adoc

@@ -1,4 +1,4 @@
-=== The index block (`INDX`) *_DEPRECATED_*
+=== Index Block (`INDX`) *_DEPRECATED_*
 
 The index block stores references to all blocks present in the file.
 It is composed of a header, followed by a sequence of entries, the count of which is defined within the header.

docs/spec/blocks/index2.adoc

@@ -1,4 +1,4 @@
-=== The index block version 2 (`IDX2`)
+=== Index Block version 2 (`IDX2`)
 
 The index block stores references to all blocks present in the file.
 It is composed of a header, followed by a sequence of entries, the count of which is defined within the header.

docs/spec/blocks/index_continuation.adoc

@@ -1,4 +1,4 @@
-=== The index block continuation (`IDXC`)
+=== Index Block Continuation (`IDXC`)
 
 The index block continuation follows the same structure and semantics as the index block version 2, with the exception that it includes a pointer to the preceding index block or index block continuation.
 

docs/spec/blocks/metadata.adoc

@@ -1,4 +1,4 @@
-=== The metadata block (`META`)
+=== Metadata Block (`META`)
 
 The metadata block contains descriptive information related to the media source, which is not part of the original media data itself.
 Typical fields may include the manufacturer name, device model, acquisition sequence identifiers, and other contextual attributes.

docs/spec/blocks/snapshot.adoc

@@ -1,4 +1,4 @@
-=== Snapshot block (`SNAP`)
+=== Snapshot Block (`SNAP`)
 
 The snapshot block holds a list of historical indexes, representing earlier versions of the media captured within the image.
 This feature enables users to manually preserve a specific media state, allowing reversion to previous versions or comparison between multiple data capture attempts.

docs/spec/blocks/tracks.adoc

@@ -1,4 +1,4 @@
-=== The tracks block (`TRKS`)
+=== Tracks Block (`TRKS`)
 
 The tracks block holds a structured list of track entries, typically aligned with the layout specified in the table of contents or a similar indexing schema.
 This format is common in optical media such as CDs, DVDs, and related disc-based formats.

docs/spec/blocks/twin_sector.adoc

@@ -1,4 +1,4 @@
-=== The twin sector table (`TWTB`)
+=== Twin Sector Table (`TWTB`)
 
 This table enumerates hardware sectors that share an identical sector number.
 Such sectors are referred to as “twin sectors,” although the grouping may consist of more than two instances.