core/exec-invoke: add missing char in comment

src/core/exec-invoke.c

@@ -2089,7 +2089,7 @@ static int build_environment(
 
         /* If this is D-Bus, tell the nss-systemd module, since it relies on being able to use blocking
          * Varlink calls back to us for look up dynamic users in PID 1. Break the deadlock between D-Bus and
-         * PID 1 by disabling use of PID1' NSS interface for looking up dynamic users. */
+         * PID 1 by disabling use of PID1's NSS interface for looking up dynamic users. */
         if (p->flags & EXEC_NSS_DYNAMIC_BYPASS) {
                 r = strv_extend_with_size(&e, &n, "SYSTEMD_NSS_DYNAMIC_BYPASS=1");
                 if (r < 0)
@@ -2097,8 +2097,8 @@ static int build_environment(
         }
 
         /* We query "root" if this is a system unit and User= is not specified. $USER is always set. $HOME
-         * could cause problem for e.g. getty, since login doesn't override $HOME, and $LOGNAME and $SHELL don't
-         * really make much sense since we're not logged in. Hence we conditionalize the three based on
+         * could cause problem for e.g. getty, since login doesn't override $HOME, and $LOGNAME and $SHELL
+         * don't really make much sense since we're not logged in. Hence we conditionalize the three based on
          * SetLoginEnvironment= switch. */
         if (!username && !c->dynamic_user && p->runtime_scope == RUNTIME_SCOPE_SYSTEM) {
                 assert(!c->user);