repart: fix option spelling and file path in comments and manpage (#41534)

Two minor fixes in comments and documentation:

 - Update comment that mentions file renamed in 211d2f972d
 - Do not reference `SizeMin=` where `SizeMinBytes=` is meant

No functional changes.

man/repart.d.xml

@@ -402,7 +402,7 @@
         be empty. If this option is used, the size allocation algorithm is slightly altered: the partition is
         created at least as big as required to fit the data in, i.e. the data size is an additional minimum
         size value taken into consideration for the allocation algorithm, similar to and in addition to the
-        <varname>SizeMin=</varname> value configured above.</para>
+        <varname>SizeMinBytes=</varname> value configured above.</para>
 
         <para>This option has no effect if the partition it is declared for already exists, i.e. existing
         data is never overwritten. Note that the data is copied in before the partition table is updated,

src/repart/repart.c

@@ -1116,7 +1116,7 @@ static uint64_t partition_min_size(const Context *context, const Partition *p) {
          * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less
          * than 4K.
          *
-         * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */
+         * DEFAULT_MIN_SIZE is the default SizeMinBytes= we configure if nothing else is specified. */
 
         if (PARTITION_IS_FOREIGN(p)) {
                 /* Don't allow changing size of partitions not managed by us */

src/test/test-specifier.c

@@ -156,7 +156,7 @@ TEST(specifiers_assorted) {
         const sd_id128_t id = SD_ID128_ALLF;
         const uint64_t llu = UINT64_MAX;
         const Specifier table[] = {
-                /* Used in src/partition/repart.c */
+                /* Used in src/repart/repart.c */
                 { 'a', specifier_uuid,      &id },
                 { 'b', specifier_uint64,    &llu },
                 {}