More doxygen tweaks

include/QF/progs.h

@@ -910,9 +910,9 @@ void PR_Undefined (progs_t *pr, const char *type, const char *name) __attribute_
 
 /** \defgroup prda_return Return Values
 	\ingroup progs_data_access
-	These macros are used to access the value returned by an interpreted VM
-	function, and to return values from engine functions into progs space
-	(that is, builtins).
+	Typed return value access. These macros are used to access the value
+	returned by an interpreted VM function, and to return values from engine
+	functions into progs space (that is, builtins).
 	\warning No checking is performed against progs types; for example, if you
 	ask for an \c int from a function that returned a \c float, you're asking
 	for trouble.
@@ -1730,7 +1730,7 @@ void PR_Resources_Clear (progs_t *pr);
 					registering the resource is a suitable name, and will
 					probably be unique.
 	\note			During VM shutdown, \a clear is called (for all resources)
-					before \destroy is called.
+					before \a destroy is called.
 */
 void PR_Resources_Register (progs_t *pr, const char *name, void *data,
 							void (*clear)(progs_t *, void *),

include/QF/segtext.h

@@ -33,6 +33,7 @@
 
 /** \defgroup segtext Segmented text files
 	\ingroup utils
+	Access named sections of a text file.
 
 	Based on The OpenGL Shader Wrangler:
 	https://prideout.net/blog/old/blog/index.html@p=11.html
@@ -66,7 +67,7 @@ typedef struct segchunk_s {
 	Segments are stored sequentially in \a chunk_list are indexed by
 	identifying tag (if present) in \a tab.
 	Segments that have no identifying tag are not in \a tab, but can
-	be accessed by walking \a chunk_list its \a next field.
+	be accessed by walking \a chunk_list 's \a next field.
 */
 typedef struct segtext_s {
 	struct segtext_s *next;