Fix remaining documentation warnings

include/git2/sys/config.h

@@ -76,7 +76,7 @@ struct git_config_backend {
  * Initializes a `git_config_backend` with default values. Equivalent to
  * creating an instance with GIT_CONFIG_BACKEND_INIT.
  *
- * @param opts the `git_config_backend` struct to initialize.
+ * @param backend the `git_config_backend` struct to initialize.
  * @param version Version of struct; pass `GIT_CONFIG_BACKEND_VERSION`
  * @return Zero on success; -1 on failure.
  */

include/git2/sys/diff.h

@@ -67,7 +67,7 @@ GIT_EXTERN(int) git_diff_print_callback__to_file_handle(
 typedef struct {
 	unsigned int version;
 	size_t stat_calls; /**< Number of stat() calls performed */
-	size_t oid_calculations; /**</**< Number of ID calculations */
+	size_t oid_calculations; /**< Number of ID calculations */
 } git_diff_perfdata;
 
 #define GIT_DIFF_PERFDATA_VERSION 1

src/path.h

@@ -319,7 +319,7 @@ extern int git_path_cmp(
  * @param callback Function to invoke on each path.  Passed the `payload`
  *		and the buffer containing the current path.  The path should not
  *		be modified in any way. Return non-zero to stop iteration.
- * @param state Passed to fn as the first ath.
+ * @param payload Passed to fn as the first ath.
  */
 extern int git_path_walk_up(
 	git_buf *pathbuf,

src/push.h

@@ -83,7 +83,7 @@ int git_push_add_refspec(git_push *push, const char *refspec);
  * Update remote tips after a push
  *
  * @param push The push object
- * @param signature The identity to use when updating reflogs
+ * @param callbacks The identity to use when updating reflogs
  *
  * @return 0 or an error code
  */